102 ideas
22309 | An idea can only be like another idea [Berkeley] |
Full Idea: An idea can be like nothing but an idea. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §08), quoted by Michael Potter - The Rise of Analytic Philosophy 1879-1930 43 'Mean' | |
A reaction: I take this to be relevant to the correspondence theory, but also to be one of Berkeley's best observations. We understand ideas, but we can't map them onto the world (because they are not maps!). ...But then how is one idea like another? Hm. |
18091 | Infinitesimals are ghosts of departed quantities [Berkeley] |
Full Idea: The infinitesimals are the ghosts of departed quantities. | |
From: George Berkeley (The Analyst [1734]), quoted by David Bostock - Philosophy of Mathematics 4.3 | |
A reaction: [A famous phrase, but as yet no context for it] |
6717 | Abstract ideas are impossible [Berkeley] |
Full Idea: We have, I think, shown the impossibility of Abstract Ideas. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §21) | |
A reaction: He achieves this by an attack on universals, offering the nominalist view that there are only particulars. There seems to be a middle ground, where universals don't actually exist, but there are settled conventional abstraction, beyond particulars. |
3942 | I do not believe in the existence of anything, if I see no reason to believe it [Berkeley] |
Full Idea: It is to me a sufficient reason not to believe the existence of anything, if I see no reason for believing it. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.205) | |
A reaction: This may just be a reasonable application of Ockham's Razor, but I fear that Berkeley painted himself into corner by demanding too many 'reasons' for everything. |
3952 | I know that nothing inconsistent can exist [Berkeley] |
Full Idea: I know that nothing inconsistent can exist. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.224) | |
A reaction: Fine, but the problem is to assess with confidence what is inconsistent. Human imagination seems to be the test for existence. But what else can we do? |
18876 | Berkeley does believe in trees, but is confused about what trees are [Berkeley, by Cameron] |
Full Idea: I think that we should consider Berkeley as believing in trees; we should simply claim that he has false beliefs about what trees are. | |
From: report of George Berkeley (The Principles of Human Knowledge [1710]) by Ross P. Cameron - Truthmakers, Realism and Ontology 'Realism' | |
A reaction: I can be realist about spots before my eyes, or a ringing in my ears, but be (quite sensibly) unsure about what they are, so Cameron's suggestion sounds plausible. |
15682 | Even fairly simple animals make judgements based on categories [Gelman] |
Full Idea: All organisms form categories: even mealworms have category-based preferences, and higher-order animals such as pigeons or octopi can display quite sophisticated categorical judgements. | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Prelims') | |
A reaction: [She cites some 1980 research to support this] This comes as no surprise, as I take categorisation as almost definitive of what a mind is. My surmise is that some sort of 'labelling' system is at the heart of it (like Googlemail labels!). |
15691 | Children accept real stable categories, with nonobvious potential that gives causal explanations [Gelman] |
Full Idea: By five children assume that a variety of categories have rich inductive potential, are stable over outward transformations, include crucial nonobvious properties, have innate potential, privilege causal features, can be explained causally, and are real. | |
From: Susan A. Gelman (The Essential Child [2003], 06 'Intro') | |
A reaction: This is Gelman's helpful summary of the findings of research on childhood essentialising, and says the case for this phenomenon is 'compelling'. |
6715 | Universals do not have single meaning, but attach to many different particulars [Berkeley] |
Full Idea: There is no such thing as one precise and definite signification annexed to any general name, they all signifying indifferently a great number of particular ideas. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §18) | |
A reaction: The term 'red' may be assigned to a range of colours, but we also recognise the precision of 'that red'. For 'electron', or 'three', or 'straight', the particulars are indistinguishable. |
6719 | No one will think of abstractions if they only have particular ideas [Berkeley] |
Full Idea: He that knows he has no other than particular ideas, will not puzzle himself in vain to find out and conceive the abstract idea annexed to any name. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §24) | |
A reaction: A nice point against universals. Maybe gods only think in particulars. One particular on its own could never suggest a universal. How are you going to spot patterns if you don't think in universals? Maths needs patterns. |
6714 | Universals do not have any intrinsic properties, but only relations to particulars [Berkeley] |
Full Idea: Universality, so far as I can comprehend it, does not consist in the absolute, positive nature or conception of anything, but in the relation it bears to the particulars signified or represented by it. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §15) | |
A reaction: I always think it is a basic principle in philosophy that some sort of essence must precede relations (and functions). What is it about universals that enables them to have a relation to particulars? |
6729 | Material substance is just general existence which can have properties [Berkeley] |
Full Idea: The most accurate philosophers have no other meaning annexed to 'material substance' but the idea of being in general, together with the relative notion of its supporting accidents. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §17) | |
A reaction: This is part of the attack on Aristotle's concept of 'substance', and is a nice way of dissolving the concept. 'Substance' will never reappear in physics, but modern philosopher have returned to it, as possibly inescapable in metaphysics. |
3959 | There is no other substance, in a strict sense, than spirit [Berkeley] |
Full Idea: There is no other substance, in a strict sense, than spirit. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.257) | |
A reaction: A nice clear statement of idealism. Why is he so confident of making this assertion. Note the addition, though, of 'in a strict' sense. He is presenting an epistemological claim as if it was an ontological one. |
16636 | A die has no distinct subject, but is merely a name for its modes or accidents [Berkeley] |
Full Idea: To me a die seems to be nothing distinct from those things which are termed its modes or accidents. And to say a die is hard, extended and square is not to attribute those qualities to a distinct subject, but only an explication of the word 'die'. | |
From: George Berkeley (The Principles of Human Knowledge [1710], n 49) | |
A reaction: This is apparently a reaction to Locke, and a final rejection of the medieval idea of a 'substance'. Unfortunately it leaves Berkeley with a 'bundle' view of objects (a typical empiricist account), which is even worse. |
15700 | In India, upper-castes essentialize caste more than lower-castes do [Gelman] |
Full Idea: The notion of caste in India is more essentialized among upper-caste than lower-caste individuals. | |
From: Susan A. Gelman (The Essential Child [2003], 08 'Intro') | |
A reaction: In a book defending fairly innate essentialism in the human race, Gelman offers this point as a warning that large cultural ingredients can be involved. Racism is the classic difficulty with essentialism. |
15685 | Essentialism is either natural to us, or an accident of our culture, or a necessary result of language [Gelman] |
Full Idea: The two views contrasting with essentialism naturally emerging in childhood are the claim that essentialism is a historical accident emerging from Western philosophy, and that essentialism is an inherent consequence of naming things. | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Background') | |
A reaction: Helpful. I take Idea 15682 to rule out the idea that it is just a feature of western culture. I can't conceive of early man surviving without essentialism. I don't think it rules out the naming view. Animals may do what emerges in us as full 'naming'. |
15684 | Children's concepts include nonobvious features, like internal parts, functions and causes [Gelman] |
Full Idea: Children incorporate a variety of nonobvious features into their concepts, including internal parts, functions, causes, and ontological distinctions. | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Prelims') | |
A reaction: This remark sums up the general thesis of her book, which she supports with a wealth of first-hand evidence. It supports my view, that the desire and need for explanation is at the root of essentialist concepts. It's hard wired in us. |
15681 | Essentialism: real or representational? sortal, causal or ideal? real particulars, or placeholders? [Gelman] |
Full Idea: We map types of essentialism by asking is it in the world or in our representations, is it sortal or causal or ideal, and is it specific particulars or placeholders for the unknown? | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Prelims') | |
A reaction: I am struck by the way that this practising experimental psychologist gets to ask questions and make distinctions much more extensively than most armchair philosophers on the subject. She focuses on the representational, causal, placeholder view. |
15678 | Essentialism says categories have a true hidden nature which gives an object its identity [Gelman] |
Full Idea: Essentialism is the view that categories have an underlying reality or true nature that one cannot observe directly but that gives an object its identity. | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Intro') | |
A reaction: I think the introduction of categories here is a misunderstanding. Does an uncategorisable thing therefore have no identity (even though it has properties)? If categories give objects their identity, what gives categories their identity? |
15683 | Sortals are needed for determining essence - the thing must be categorised first [Gelman] |
Full Idea: I suggest that sortals are likewise required for determining essence. One cannot answer the question 'What is the essence of this?' without supplying the sortal - of this 'what'. | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Prelims') | |
A reaction: I remain baffled by this view. I take the category to be an inductive generalisation from other similar individuals. It can't get off the ground if you don't start with the individuals. Sortals are just a shorthand. |
15697 | Kind (unlike individual) essentialism assumes preexisting natural categories [Gelman] |
Full Idea: With kind essentialism the person assumes that the world is divided up into preexisting natural categories. Individual essentialism seems not to require any such commitment to kind realism. | |
From: Susan A. Gelman (The Essential Child [2003], 06 'Essentialism') | |
A reaction: This pinpoints my difficulty: how do we decide whether some category or attributed essence is part of a preexisting natural kind? Some natural kinds are self-evident, like water (roughly), but others need subtle teasing out. How is the teasing done? |
15687 | Kinship is essence that comes in degrees, and age groups are essences that change over time [Gelman] |
Full Idea: Kinship is essentialized, but admits of degrees, ...and people can be essentialist even about categories they do not view as fixed over time, such as age groupings. | |
From: Susan A. Gelman (The Essential Child [2003], 03 'Summary') | |
A reaction: Given my notion of essence are necessarily explanatory, I embrace both of these points. Being very athletic comes in degrees, and changes over times. |
15679 | Essentialism comes from the cognitive need to categorise [Gelman] |
Full Idea: Essentialism has its source in the cognitive requirement of categorization in certain domains - particularly as they affect the young learner. | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Essentialist') | |
A reaction: I think the phenomenon is better understood as part of the cognitive requirement to understand and explain. Categorisation is just one way to aid explanation. Children try to understand (essentially) a new animal without categorisation. |
15698 | We found no evidence that mothers teach essentialism to their children [Gelman] |
Full Idea: We found no evidence that mothers teach essentialism to their children. ...Mothers teach children about kinds, not about essences, and mothers help children identify which categories are richly structured. | |
From: Susan A. Gelman (The Essential Child [2003], 07 'Conclusions') | |
A reaction: This is a psychologist who specialises in this topic. If you think essentialism is inculcated by a our culture, you will have to blame the fathers. |
15709 | Essentialism is useful for predictions, but it is not the actual structure of reality [Gelman] |
Full Idea: Essentialism is a reasoning heuristic that allows us to make fairly good predictions much of the time, but it should not be confused with the structure of reality. | |
From: Susan A. Gelman (The Essential Child [2003], 11 'Discussion') | |
A reaction: She particularly cites biology as the area where it might be inaccurate. I'm beginning to think that the operations of induction are the place to look for an good understanding of essentialism. |
15696 | Peope favor historical paths over outward properties when determining what something is [Gelman] |
Full Idea: People favor historical paths over outward properties when determining what something is. ...An object looking like a knife is less likely to be called 'a knife' if it is described as having been created by accident. | |
From: Susan A. Gelman (The Essential Child [2003], 06 'Essentialism') | |
A reaction: I like this because it talks, suggestively, of 'historical paths' rather than of 'origin'. Thus we might judge a person's identity by their traumatic experience rather than by their birth. This doesn't challenge necessity of origin, but affects labels. |
3946 | A thing is shown to be impossible if a contradiction is demonstrated within its definition [Berkeley] |
Full Idea: A thing is shown to be impossible when a repugnancy is demonstrated between the ideas comprehended in its definition. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.214) | |
A reaction: The problem is always that imagination is needed to see the 'repugnancy', and that is relative and limited. |
15707 | There is intentional, mechanical, teleological, essentialist, vitalist and deontological understanding [Gelman] |
Full Idea: The modes of understanding (or modes of construal) which have been proposed are intentional, mechanical, teleological, essentialist, vitalist (perhaps), and deontological. | |
From: Susan A. Gelman (The Essential Child [2003], 11 'Broadening') | |
A reaction: She cites psychological research to support this, and calls it 'a relatively small number' of modes. Compare Aristotle's four modes of cause/explanation. |
3958 | Since our ideas vary when the real things are said to be unchanged, they cannot be true copies [Berkeley] |
Full Idea: As our ideas are perpetually varied, without any change in the supposed real things, it necessarily follows that they cannot all be true copies of them. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.239) | |
A reaction: This seems a good objection to any direct or naïve realist view. Colours get darker as the sun goes down, and objects become blurred as they recede into the distance. |
3943 | If existence is perceived directly, by which sense; if indirectly, how is it inferred from direct perception? [Berkeley] |
Full Idea: Either you perceive the being of matter immediately, or mediately; if immediately, pray inform me by which of the senses you perceive it; if mediately, let me know by what reasonings it is inferred from those things which you perceive immediately. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.208) | |
A reaction: A problem for strong empiricists, and he is right that existence can't be directly perceived, but it seems a good explanation (for which some reason can be shown), and supports a more rationalist view. |
3931 | Sensible objects are just sets of sensible qualities [Berkeley] |
Full Idea: Sensible things are nothing else but so many sensible qualities. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.154) | |
A reaction: As it stands this is phenomenalism, but Berkeley eventually votes for idealism. He should acknowledge possible sensations which aren't actually experienced. |
6722 | Perception is existence for my table, but also possible perception, by me or a spirit [Berkeley] |
Full Idea: The table I write on I say exists, that is, I see and feel it; and if I were out of my study I should say it existed - meaning thereby that if I was in my study I might perceive it, or that some other spirit actually does perceive it. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §3) | |
A reaction: Berkeley is always (understandably) labelled as an 'idealist', but this seems to be what we call 'phenomenalism', because it allows possible experiences as well as actual ones. See Ideas 5170 and 6522. |
5192 | Berkeley did not deny material things; he merely said they must be defined through sensations [Berkeley, by Ayer] |
Full Idea: Berkeley did not (as we are commonly told) deny the reality of material things. ..What Berkeley discovered was that material things must be defined in terms of sense-contents. | |
From: report of George Berkeley (Three Dialogues of Hylas and Philonous [1713]) by A.J. Ayer - Language,Truth and Logic Ch.2 | |
A reaction: This seems to be a rather debatable attempt to claim that Berkeley was a phenomenalist (like Ayer), rather than an idealist. Try ideas 3942, 3944, 3945, 3957, 3959 in this database. |
5174 | Berkeley needed a phenomenalist account of the self, as well as of material things [Ayer on Berkeley] |
Full Idea: The considerations which make it necessary, as Berkeley saw, to give a phenomenalist account of material things, make it necessary also, as Berkeley did not see, to give a phenomenalist account of the self. | |
From: comment on George Berkeley (Three Dialogues of Hylas and Philonous [1713]) by A.J. Ayer - Language,Truth and Logic Ch.7 | |
A reaction: Phenomenalism involves 'possible' experiences as well as actual ones. That could add up to quite a rich and stable account of the self, as opposed to Hume's notorious introspection, which only saw an actual shifting 'bundle' of experience. |
6723 | The 'esse' of objects is 'percipi', and they can only exist in minds [Berkeley] |
Full Idea: The absolute existence of unthinking things with no relation to their being perceived is unintelligible to me; their 'esse' is 'percipi', nor is it possible they should have any existence out of the minds or thinking things which perceive them. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §3) | |
A reaction: "Esse est percipi" (to be is to be perceived) is the well-known slogan associated with Berkeley. I cannot see how Berkeley can assert that the separate existence of things is impossible. He is the classic confuser of epistemology and ontology. |
6732 | When I shut my eyes, the things I saw may still exist, but in another mind [Berkeley] |
Full Idea: When I shut my eyes, the things I saw may still exist, but it must be in another mind. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §90) | |
A reaction: This strikes me as ridiculous. What kind of theory says that a table goes out of existence when someone forgets to look at it for a moment, but is then recreated in identical form? Epistemology is not ontology. |
1103 | 'To be is to be perceived' is a simple confusion of experience with its objects [Russell on Berkeley] |
Full Idea: Berkeley thinks 'to be is to be perceived', and only God provides continuity. He has simply confused the experience of perception with the thing being perceived. Ideas have content. | |
From: comment on George Berkeley (Three Dialogues of Hylas and Philonous [1713]) by Bertrand Russell - Problems of Philosophy |
6403 | For Berkelely, reality is ideas and a community of minds, including God's [Berkeley, by Grayling] |
Full Idea: Berkeley's thesis is that reality ultimately consists of a community of minds and their ideas; one of the minds (God) is infinite, and causes most of the ideas. | |
From: report of George Berkeley (Three Dialogues of Hylas and Philonous [1713]) by A.C. Grayling - Russell Ch.2 | |
A reaction: I think Russell nicely pinpoints what is wrong with Berekely, which is that he confuses ideas with their contents. If I think about my garden, the garden is real (probably), which is the content, and they idea is just a way of thinking. |
3936 | Time is measured by the succession of ideas in our minds [Berkeley] |
Full Idea: Time is measured by the succession of ideas in our minds. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.172) | |
A reaction: But we distinguish between subjective time (which flies when you are having fun), and objective time, judged from observation of clocks and nature. |
3930 | There is no such thing as 'material substance' [Berkeley] |
Full Idea: That there is no such thing as what philosophers call 'material substance', I am seriously persuaded. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.150) | |
A reaction: I'm sorry, but I can't do with this. It confuses epistemology with ontology. Ontology is a matter of judgement; epistemology is the evidence on which we base it. We know sensations; personally I judge that there are material substances. What about you? |
3939 | I conceive a tree in my mind, but I cannot prove that its existence can be conceived outside a mind [Berkeley] |
Full Idea: I may conceive in my own thoughts the idea of a tree, but that is all. And this is far from proving that I can conceive it existing out of the minds of all spirits. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.184) | |
A reaction: If Berkeley has based a world view on this point, then his mistake is to require a 'proof'. Aristotle explained why you can't prove everything (not to mention Gödel). |
3945 | There is nothing in nature which needs the concept of matter to explain it [Berkeley] |
Full Idea: I challenge you to show me that thing in nature which needs matter to explain or account for it. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.212) | |
A reaction: I disagree. Physics is a good theory for explaining why we have perceptions. Failing that there is not even a glimmer of an explanation of our experiences. |
3947 | Perceptions are ideas, and ideas exist in the mind, so objects only exist in the mind [Berkeley] |
Full Idea: Wood, fire, water, flesh, iron, are things that I know, and only known because I perceive them by my senses; these are immediately perceived, and so are ideas; ideas cannot exist without the mind; their existence consists therefore in being perceived. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.220) | |
A reaction: This makes no distinction between an idea and its content. Berkeley fails to grasp the weird concept of intentionality. Trees aren't in my head, just because I think about them! |
6724 | The only substance is spirit, or that which perceives [Berkeley] |
Full Idea: It is evident that there is not any other Substance than spirit, or that which perceives. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §7) | |
A reaction: Weird. To say that this is 'evident' seems to be begging the question. Why should he assume that there is nothing more to reality than his perception of it? He seems strangely unimaginative. |
3933 | Primary qualities (such as shape, solidity, mass) are held to really exist, unlike secondary qualities [Berkeley] |
Full Idea: Sensible qualities are by philosophers divided into primary and secondary; the former are extension, figure, solidity, gravity, motion and rest, which exist really in bodies. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.169) | |
A reaction: A crucial distinction, which anti-realists such as Berkeley end up denying. I think it is a good distinction, and philosophers should fight to preserve it. |
6726 | No one can, by abstraction, conceive extension and motion of bodies without sensible qualities [Berkeley] |
Full Idea: I desire any one to reflect and try whether he can, by any abstraction of thought, conceive the extension and motion of a body without any sensible qualities. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §10) | |
A reaction: The rather geometrical view of objects found in Descartes and Russell is an attempt to do this. I don't think the fact that we can't really achieve it matters much. We divide primary from secondary qualities in our understanding, not in experience. |
6727 | Figure and extension seem just as dependent on the observer as heat and cold [Berkeley] |
Full Idea: If heat and cold are only affections of the mind (since the same body seems cold to one hand and warm to the other), why may we not argue that figure and extension also appear different to the same eye at different stations? | |
From: George Berkeley (The Principles of Human Knowledge [1710], §14) | |
A reaction: If the assessment of the qualities of an object is entirely a matter of our experiences of it, there is no denying Berkeley on this. However, judgement goes beyond experience, into speculations, inferences, and explanations. |
6728 | Motion is in the mind, since swifter ideas produce an appearance of slower motion [Berkeley] |
Full Idea: Is it not reasonable to say that motion is not without the mind, since if the succession of ideas in the mind become swifter the motion, it is acknowledged, shall appear slower without any alteration in any external object. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §14) | |
A reaction: An intriguing argument, based on what is now the principle of slow-motion photography. Fast minds slow down movement, like great tennis players. By what right does Berkeley say that the external subject is unaltered? |
3934 | A mite would see its own foot as large, though we would see it as tiny [Berkeley] |
Full Idea: A mite must be supposed to see his own foot as a body of some considerable dimension, though they appear to you scarcely discernible. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.170) | |
A reaction: Berkeley is confused. Hot is secondary, but temperature is primary. Bigness is secondary, size primay. Midgets and tall people don't disagree over the size of a table. |
3935 | The apparent size of an object varies with its distance away, so that can't be a property of the object [Berkeley] |
Full Idea: As we approach to or recede from an object, the visible extension varies, being at one distance ten or a hundred times greater than at another; doth it not follow that it is not really inherent in the object? | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.171) | |
A reaction: Berkeley is confused, because he is too literally empirical. Qualities are not self-evidently primary or secondary, but are judged so after comparisons (e.g. with testimony, or with the other senses). |
3937 | 'Solidity' is either not a sensible quality at all, or it is clearly relative to our senses [Berkeley] |
Full Idea: By 'solidity' either you do not mean any sensible quality, and so it is beside our enquiry; or if you do, it must be hardness or resistance, which are plainly relative to our senses. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.173) | |
A reaction: Berkeley fails to recognise that a quality can have primary and secondary aspects (hot/high temperature). He is right that primary qualities are not directly perceived. They are judgements. |
3940 | Distance is not directly perceived by sight [Berkeley] |
Full Idea: Distance is not properly and immediately perceived by sight. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.186) | |
A reaction: Interestingly, if secondary qualities are not strictly perceptions of the object, and primary qualities are not directly perceived, then we don't seem to perceive anything at all. Perhaps we should drop the concept of 'perception'? |
6495 | Berkeley's idealism resulted from fear of scepticism in representative realism [Robinson,H on Berkeley] |
Full Idea: It was fear of scepticism based upon representative realism that motivated Berkeley's idealism. | |
From: comment on George Berkeley (The Principles of Human Knowledge [1710]) by Howard Robinson - Perception II.1 | |
A reaction: Personally I side with Russell, who accepts representative realism, and also accepts that some degree of scepticism is unavoidable, but without getting excited about it. The key to everything is to be a 'fallibilist' about knowledge. |
3957 | Immediate objects of perception, which some treat as appearances, I treat as the real things themselves [Berkeley] |
Full Idea: Those immediate objects of perception, which, according to you, are only appearances of things, I take to be the real things themselves. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.237) | |
A reaction: If that is a judgement, which it seems to be, it is a strange one. Realists offer a much better explanation of perceptions. |
6720 | Knowledge is of ideas from senses, or ideas of the mind, or operations on sensations [Berkeley] |
Full Idea: The objects of knowledge are either ideas imprinted on the senses, or passions and operations of the mind, or ideas (formed by memory and imagination) compounding, dividing or barely representing the original perceptions. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §1) | |
A reaction: This is the germ of Hume's 'associations' (Idea 2189). There is not much room here for synthetic a priori knowledge, as the a priori part seems to merely know the mind. Most of Russell's epistemology is contained in the last part of the sentence. |
3953 | Real things and imaginary or dreamed things differ because the latter are much fainter [Berkeley] |
Full Idea: The difference between real things, and chimeras formed by the imagination, or the visions of a dream, is that the latter are faint and indistinct. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.225) | |
A reaction: In Hume this becomes 'impressions' and 'ideas'. It does raise the question of WHY some ideas are not as faint as others. |
3938 | Geometry is originally perceived by senses, and so is not purely intellectual [Berkeley] |
Full Idea: Figures and extension, being originally perceived by sense, do not belong to pure intellect. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.176) | |
A reaction: Is the square root of 169 less 'pure' in my mind if I learn it from laying out bricks instead of by thinking about numbers? Confusion of how you learn with what you learn? |
15703 | Memories often conform to a theory, rather than being neutral [Gelman] |
Full Idea: Memory is notorious for conforming to theory (rather than memory being a neutral source of information). | |
From: Susan A. Gelman (The Essential Child [2003], 09 'Theory') | |
A reaction: This observation by a psychologist is music to sceptics about objectivity. Memory is so fundamental to our basic epistemology that it could even be the nature of thought itself. |
3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
Full Idea: Anaxarchus said that he was not even sure that he knew nothing. | |
From: report of Anaxarchus (fragments/reports [c.340 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 09.10.1 |
3944 | It is possible that we could perceive everything as we do now, but nothing actually existed. [Berkeley] |
Full Idea: We might perceive all things just as we do now, though there was no matter in the world. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.209) | |
A reaction: An old Greek argument. Now we have an explanation of experience, but we wouldn't if nothing existed. Which doesn't prove that anything exists. Is some explanation always preferable to none? Cf. religion. |
3932 | A hot hand and a cold hand will have different experiences in the same tepid water [Berkeley] |
Full Idea: Suppose now one of your hands hot, and the other cold, and that they are both at once put into the same vessel of water, in an intermediate state; will not the water seem cold to one hand, and warm to the other? | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], I p.158) | |
A reaction: A nice clear example of how some relativism must be acknowledged. It feels hot, but what is its temperature in degrees C? |
15708 | Inductive success is rewarded with more induction [Gelman] |
Full Idea: Inductive success is rewarded with more induction. | |
From: Susan A. Gelman (The Essential Child [2003], 11 'Broadening') | |
A reaction: I love this one. Neat, accurate, and central to how we understand the world. I take inductive success to be stored as labels, concepts, categories, words and general truths, which are then our resource for further attempts. |
15695 | Children make errors in induction by focusing too much on categories [Gelman] |
Full Idea: Because of their narrow focus, children's sensitivity to categories as the basis of induction is a reasoning bias that, though useful much of the time, results in systematic errors. | |
From: Susan A. Gelman (The Essential Child [2003], 06 'The role') | |
A reaction: This is the bad sense of 'essentialism' which worries its opponents. Presumably, though, my favoured scientific essentialism will be 'scientific', and avoid this problem. The relation between categories and induction needs to be clear. |
15694 | Children overestimate the power of a single example [Gelman] |
Full Idea: We suggest that children overestimate the power of a single example. | |
From: Susan A. Gelman (The Essential Child [2003], 06 'The role') | |
A reaction: This conclusion arises from extensive psychological research. 'My grandma smoked, and she lived to be 97' - adults do this too. Wittgenstein says assuming other minds because of your own is induction from one example! |
15692 | People tend to be satisfied with shallow explanations [Gelman] |
Full Idea: People tend to be satisfied with rather shallow explanations. | |
From: Susan A. Gelman (The Essential Child [2003], 06 'Is essentialism') | |
A reaction: She cites some psychological research to support this. Pretty obvious really. I take the so-called 'scientific method' to be nothing more than ceasing to be satisfied with such shallowness. |
23636 | Berkeley's idealism gives no grounds for believing in other minds [Reid on Berkeley] |
Full Idea: I can find no principle in Berkeley's system, which affords me even probable ground to conclude that there are other intelligent beings, like myself. | |
From: comment on George Berkeley (The Principles of Human Knowledge [1710]) by Thomas Reid - Essays on Intellectual Powers 2: Senses 10 | |
A reaction: I agree, which means that Berkeley's position seems to entail solipsism, unless God is the Cartesian deus ex machina who rescues him from this wall of ignorance. |
6736 | I know other minds by ideas which are referred by me to other agents, as their effects [Berkeley] |
Full Idea: The knowledge I have of other spirits is not immediate, as is the knowledge of my ideas; but depending on the intervention of ideas, by me referred to agents or spirits distinct from myself, as effects or concomitant signs. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §145) | |
A reaction: This strikes me as gross intellectual dishonesty, since the argument Berkeley uses to assert other minds could equally be used to assert the existence of tables ('by me referred to agents distinct from myself, as effects'). Be a solipsist or a realist. |
3948 | Experience tells me that other minds exist independently from my own [Berkeley] |
Full Idea: It is plain that other minds have an existence exterior to my mind, since I find them by experience to be independent of it. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.220) | |
A reaction: This is a surprising claim from Berkeley. If trees only exist through their experience in my mind, why don't other minds exist in the same way? |
6713 | If animals have ideas, and are not machines, they must have some reason [Berkeley] |
Full Idea: If the brutes have any ideas at all, and are not bare machines (as some would have them), we cannot deny them to have some reason. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §11) | |
A reaction: It seems possible to imagine a low level of mind, where a few ideas (or concepts) float around, but hardly anything worth the name of reason. However, a Darwinian view suggests that concepts must bestow an advantage, so the two go together. |
6491 | Berkeley replaced intentionality with an anti-abstractionist imagist theory of thought [Berkeley, by Robinson,H] |
Full Idea: By Berkeley - with his anti-abstractionism and imagist theory of thought - the classical sense-datum conception was firmly established, and intentionality had disappeared as an intrinsic property, not only of perceptual states, but of all mental contents. | |
From: report of George Berkeley (The Principles of Human Knowledge [1710]) by Howard Robinson - Perception 1.6 | |
A reaction: Intentionality was originally a medieval concept, and was revived by Brentano in the late nineteenth century. Nowadays intentionality is taken for granted, but I still suspect that we could drop it, and talk of nothing but brain states caused by reality. |
6711 | The mind creates abstract ideas by considering qualities separated from their objects [Berkeley] |
Full Idea: We are told that the mind being able to consider each quality of things singly, or abstracted from those other qualities with which it is united, does by that means frame to itself abstract ideas. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §7) | |
A reaction: A helpful explanation of 'abstract' ideas. Berkeley gives colour and movement as examples. Fodor suggests that abstraction is the key strategy in empiricist epistemology. The difficulty is to decide whether the qualities are natural or conventional. |
10581 | I can only combine particulars in imagination; I can't create 'abstract' ideas [Berkeley] |
Full Idea: Whether others can abstract their ideas, they best can tell. For myself, I find I have a faculty of imagining, or representing to myself, only the idea of those particular things I have perceived, and of compounding and dividing them. | |
From: George Berkeley (The Principles of Human Knowledge [1710], 10) | |
A reaction: He is admitting mixing experiences, but always particulars, never abstract. His examples are 'man' and 'motion'. Compare Aristotle Idea 9067. Berkeley is, I think, trapped in a false imagistic view of thought. My image of Plato blurs young and old. |
6721 | Ideas are perceived by the mind, soul or self [Berkeley] |
Full Idea: The thing which knows or perceives ideas is what I call mind, spirit, soul or myself. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §2) | |
A reaction: The interest here is in making no distinction between 'mind' and 'self', which seems to ally Berkeley with Locke's view of personal identity, as continuity of consciousness. The addition of 'soul' tries to connect Locke to Christian thought. |
3941 | How can that which is unthinking be a cause of thought? [Berkeley] |
Full Idea: How can that which is unthinking be a cause of thought? | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.203) | |
A reaction: Presumably, though, he thinks that thought can cause 'that which is unthinking' to move'. He likes one half of the interaction problem (which supports dualism), but avoids the other half. |
15680 | Folk essentialism rests on belief in natural kinds, in hidden properties, and on words indicating structures [Gelman] |
Full Idea: The three components of essentialism as a folk belief are the idea that certain categories are natural kinds, the idea that some unobservable property causes the way things are, and the idea that words reflect real structures. | |
From: Susan A. Gelman (The Essential Child [2003], 01 'Prelims') |
5374 | Berkeley probably used 'idea' to mean both the act of apprehension and the thing apprehended [Russell on Berkeley] |
Full Idea: Berkeley seems to have confused the colour of the thing apprehended with the act of apprehension; probably either of these would have been called an 'idea' be Berkeley. | |
From: comment on George Berkeley (Three Dialogues of Hylas and Philonous [1713]) by Bertrand Russell - Problems of Philosophy | |
A reaction: If we are saying that Berkeley's error was entirely verbal, there is a chicken-and-egg problem. He was an idealist, so he wouldn't have thought that there were two separate concepts behind the word 'idea'. Russell merely asserts that there are. |
15686 | Labels may indicate categories which embody an essence [Gelman] |
Full Idea: Labels may signal categories that are believed to embody an essence. | |
From: Susan A. Gelman (The Essential Child [2003], 02 'Privileged') | |
A reaction: This is quoted by her, as a summary of a substantial body of research which she endorses. I cite it because it pinpoints my own view. I take 'labels' to be basic to minds, as organisers of thought, and this ties essences to labels. Satisfying picture. |
15690 | Causal properties are seen as more central to category concepts [Gelman] |
Full Idea: Properties that enter into causally meaningful links are better remembered and are treated as more central to the category than properties that are not causally meaningful. | |
From: Susan A. Gelman (The Essential Child [2003], 05 'Causation2') | |
A reaction: This is a summary of considerable psychological research. This account not only sounds plausible, but would fit better withy why we form concepts and categories in the first place. We are trying to relate to the causations of nature. |
15688 | Categories are characterized by distance from a prototype [Gelman] |
Full Idea: On prototype views, categories are characterized by distance from a prototype. | |
From: Susan A. Gelman (The Essential Child [2003], 05 'Causation') | |
A reaction: Gelman observes that this view makes no reference to any causal features of things. This cuts them off from using underlying essences in the process of categorisation and concept-formation. How do you spot a prototype, with no category? |
15689 | Theory-based concepts use rich models to show which similarities really matter [Gelman] |
Full Idea: Theory-based approaches to categories are a response to the limitations of mere similarities holding the category together, and require knowledge-rich explanatory models to say which features are more central to a concept. | |
From: Susan A. Gelman (The Essential Child [2003], 05 'Causation1') | |
A reaction: I see a promising account in linking theory theory to essentialism. For a physical object (or even for a process) infer a structure, and then identify what is most important in that structure. That gives you your stable, agreed concept. |
15699 | Prelinguistic infants acquire and use many categories [Gelman] |
Full Idea: Language does not appear to be necessary for forming categories, since prelinguistic infants acquire many categories, and even use categories to form inferences about unknown properties. | |
From: Susan A. Gelman (The Essential Child [2003], 08 'Intro') | |
A reaction: She cites lots of research in support of this claim. The idea may come as a surprise to some people, but not to me. I take it that categorisation is what a brain is for, including animal brains. |
6716 | Language is presumably for communication, and names stand for ideas [Berkeley] |
Full Idea: It is a received opinion that language has no other end but the communicating our ideas, and that every significant name stands for an idea. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §19) | |
A reaction: This attitude to language has been widely discredited, partly by the observation that 'idea' is very ambiguous, and partly by the fans of meaning-as-use. Truth conditions seem to be ideas, and so are speaker's intentions. |
6718 | I can't really go wrong if I stick to wordless thought [Berkeley] |
Full Idea: So long as I confine my thoughts to my own ideas divested of words, I do not see how I can easily be mistaken. | |
From: George Berkeley (The Principles of Human Knowledge [1710], Intro §22) | |
A reaction: I think it was one of the great errors of twentieth century philosophy to say that Berkeley cannot do this, because thought needs language. Personally I think language lags along behind most our thinking, tidying up the mess. I believe in propositions. |
3954 | Immorality is not in the action, but in the deviation of the will from moral law [Berkeley] |
Full Idea: Sin or moral turpitude doth not consist in the outward physical action or motion, but in the internal deviation of the will from the laws of reason and religion. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.227) | |
A reaction: A Kantian view (that the only good thing is a good will). It is a very empiricist (and anti-Greek) view to deny that actions have any intrinsic value. |
6731 | No one can explain how matter affects mind, so matter is redundant in philosophy [Berkeley] |
Full Idea: How matter should operate on a spirit, or produce any idea in it, is what no philosopher will pretend to explain; it is therefore evident there can be no use of matter in natural philosophy. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §50) | |
A reaction: An intriguing argument for idealism, which starts in Cartesian dualism, but then discards the physical world because of the notorious interaction problem. Of course, if he had thought that matter and spirit were one (Spinoza) the problem vanishes. |
15693 | One sample of gold is enough, but one tree doesn't give the height of trees [Gelman] |
Full Idea: We can confidently determine the chemical composition of gold from just a single sample, but we cannot determine the height of trees from just a single tree. | |
From: Susan A. Gelman (The Essential Child [2003], 06 'The role') | |
A reaction: The tricky word here is 'confidently'. If you meet one Latvian who is nice, do you assume they are all nice? At what point do you decide gold etc. really are natural kinds, where one sample tells all? Evolution of species... |
15701 | Nouns seem to invoke stable kinds more than predicates do [Gelman] |
Full Idea: Children judged personal characteristics as more stable when they were referred to by a noun ('She is a carrot eater') than by a verbal predicate ('She eats carrots whenever she can') | |
From: Susan A. Gelman (The Essential Child [2003], 08 'Naming') | |
A reaction: This fits with my feeling that 'labels' are the basis of how the mind works. The noun invokes a genuine category of thing, where a predicate attaches to some preselected category ('she'). Gelman says names encourage inductions. |
6730 | We discover natural behaviour by observing settled laws of nature, not necessary connections [Berkeley] |
Full Idea: That food nourishes, sleep refreshes, and fire warms us; all this we know, not by discovering any necessary connexion between our ideas, but only by the observation of the settled laws of nature. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §31) | |
A reaction: Hume is famous for this idea, but it is found in Hobbes too (Idea 2364), and is the standard empiricist view of causation. The word 'settled' I take to imply that the laws are contingent, because they could become unsettled at any time. |
15861 | The laws of nature are mental regularities which we learn by experience [Berkeley] |
Full Idea: The set rules or established methods wherein the Mind we depend on excites in us the ideas of sense, are called the 'laws of nature'; and these we learn by experience, which teaches us that such and such ideas are attended with certain other ideas. | |
From: George Berkeley (The Principles of Human Knowledge [1710], 33) | |
A reaction: He observes that the ideas of sense are more regular than other mental events, and attributes the rules to an Author. He is giving the standard empirical Humean view, with his own quirky idealist slant. |
15702 | Essentialism doesn't mean we know the essences [Gelman] |
Full Idea: Essentialism does not entail that people know what the essence is. | |
From: Susan A. Gelman (The Essential Child [2003], 09 'Theory') | |
A reaction: This is a fundamental and (I would say) fairly obvious point, but it needs to be made to the more passionate opponents of essentialism. |
15705 | Essentialism encourages us to think about the world scientifically [Gelman] |
Full Idea: Essentialism encourages a 'scientific' mindset in thinking about the natural world, a belief that intensive study of a natural domain will yield ever more underlying properties. | |
From: Susan A. Gelman (The Essential Child [2003], 11 'Intro') | |
A reaction: Maybe scientists must be committed to essences, the way mathematicians must be committed to numbers? This idea spendidly opposes the doubts expressed by Popper. |
15704 | Essentialism starts from richly structured categories, leading to a search for underlying properties [Gelman] |
Full Idea: If my speculations are correct, then essentialism starts out strictly as a belief that many categories are richly structured kinds, then additionally becomes a search for underlying inherent properties. | |
From: Susan A. Gelman (The Essential Child [2003], 10 'Figuring') | |
A reaction: This is her summary of extensive essentialist research among children. She favours the priority of kinds and categories. We actually change taxonomies on the basis of revisions in our accounts of essence. Science negotiates. |
6734 | If properties and qualities arise from an inward essence, we will remain ignorant of nature [Berkeley] |
Full Idea: An inducement to pronouncing ourselves ignorant of the nature of things is the opinion that everything includes within itself the cause of its properties; or that there is in each object an inward essence which is the source whence its qualities flow. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §102) | |
A reaction: This remains a good objection to essentialism - that while it remains quite a plausible picture of how nature operates, it makes the task of understanding nature hopeless. We can grasp imposed regular laws, but not secret inner essences. |
15706 | A major objection to real essences is the essentialising of social categories like race, caste and occupation [Gelman] |
Full Idea: One major argument against the view that essences are real is the rampant essentializing of categories that are socially constructed (such as race, caste and occupation). | |
From: Susan A. Gelman (The Essential Child [2003], 11 'Is essentialism') | |
A reaction: You can't argue with that. It raises the question of whether the approach of scientific essentialism has any value in the social, rather than physical, sciences. We jokingly essentialise groups of people such as referees or Oxonians. |
6735 | All motion is relative, so a single body cannot move [Berkeley] |
Full Idea: There cannot be any motion other than relative; …if there was one only body in being it could not possibly move. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §112) | |
A reaction: This seems to agree with with Leibniz in denying the Newton-Clarke idea of absolute space. See Idea 2100. Suppose there were two bodies racing towards one another, when one of them suddenly vanished? |
6733 | I cannot imagine time apart from the flow of ideas in my mind [Berkeley] |
Full Idea: Whenever I attempt to frame a simple idea of time, abstracted from the succession of ideas in my mind, which flows uniformly and is participated in by all beings, I am lost and embrangled in inextricable difficulties. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §98) | |
A reaction: 'Embrangled'! A nice statement of the idealist view of time, as entirely mental. I know what he means. However, surely he can manage to imagine a movement which continues when he shuts he eyes? Try blinking during a horse race. |
3950 | There must be a God, because all sensible things must be perceived by him [Berkeley] |
Full Idea: I immediately and necessarily conclude the being of a God, because all sensible things must be perceived by him. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.198) | |
A reaction: Daft. This contradicts Berkeley's whole empiricist position, that existence depends on known experience. Who knows whether God is thinking about trees? |
3951 | There must be a God, because I and my ideas are not independent [Berkeley] |
Full Idea: From the dependency I find in myself and my ideas, I do by an act of reason necessarily infer the existence of a God. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.222) | |
A reaction: No. Hume answered this, by showing how big abstract ideas are built up from experience. This is a future bishop's wish-fulfilment. |
3949 | It has been proved that creation is the workmanship of God, from its beauty and usefulness [Berkeley] |
Full Idea: Divines and philosophers have proved beyond all controversy, from the beauty and usefulness of the several parts of creation, that it was the workmanship of God. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], II p.198) | |
A reaction: Not convincing. Beauty is probably a sublimation of sexual desire (or an echo of the human mind in the external world, in music), and utility is relative to homo sapiens, I presume. |
6737 | Particular evils are really good when linked to the whole system of beings [Berkeley] |
Full Idea: Those particular things which, considered in themselves, appear to be evil, have the nature of good, when considered as linked with the whole system of beings. | |
From: George Berkeley (The Principles of Human Knowledge [1710], §153) | |
A reaction: This wildly contradicts the rest of Berkeley's philosophy, which is strictly empiricist, and rests wholly on actual experience. What experience does he have of the 'whole system of beings', and its making evil into actual good? |
3956 | People are responsible because they have limited power, though this ultimately derives from God [Berkeley] |
Full Idea: Thinking rational beings, in the production of motions, have the use of limited powers, ultimately derived from God, but immediately under the direction of their own wills, which is sufficient to entitle them to all the guilt of their own actions. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.228) | |
A reaction: An episcopal evasion. A classic attempt to have cake and eat it. Either God is in charge or he isn't. |
3955 | If sin is not just physical, we don't consider God the origin of sin because he causes physical events [Berkeley] |
Full Idea: If sin doth not consist of purely physical actions, the making God a cause of all such actions, is not making him the author of sin. | |
From: George Berkeley (Three Dialogues of Hylas and Philonous [1713], III p.227) | |
A reaction: An equivocation. If responsibility resides in consciousness, God is presumably conscious, and we can judge the events he causes. |