63 ideas
| 15447 | We shouldn't always follow where the argument leads! [Lewis on Plato] |
| Full Idea: There comes a time not to go on following where the argument leads! | |
| From: comment on Plato (The Laws [c.348 BCE], 667b) by David Lewis - Against Structural Universals 'Variant' | |
| A reaction: Lewis is a fine one to talk, since he follows argument that take him past innumerable incredulous stares of onlookers. |
| 17729 | Examining concepts can recover information obtained through the senses [Jenkins] |
| Full Idea: My idea is that conceptual examination might be a way of recovering information previously obtained through the senses. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 4.8) | |
| A reaction: Now you're talking! This is really interesting conceptual analysis, rather than the sort of stamp-collecting approach to analsis practised by the duller sort of philosopher. But why bother with conceptual examination, when you have senses? |
| 243 | It is foolish to quarrel with the mind's own reasoning processes [Plato] |
| Full Idea: When the soul quarrels with knowledge or opinion or reason, its natural ruling principles, you have there what I call 'folly'. | |
| From: Plato (The Laws [c.348 BCE], 689b) |
| 241 | We ought to follow where the argument leads us [Plato] |
| Full Idea: We ought to follow where the argument leads us. | |
| From: Plato (The Laws [c.348 BCE], 667a) |
| 21264 | Mortals are incapable of being fully rational [Plato] |
| Full Idea: We mustn't assume that mortal eyes will ever be able to look upon reason and get to know it adequately. | |
| From: Plato (The Laws [c.348 BCE], 897d) | |
| A reaction: This is in the context of the rational control of the whole Cosmos. I presume Plato would be flabbergasted by the findings of recent physics and cosmology. Did Kant believe that he was being completely rational about ethics? |
| 251 | Truth has the supreme value, for both gods and men [Plato] |
| Full Idea: Truth heads the list of all things good, for gods and men alike. | |
| From: Plato (The Laws [c.348 BCE], 730c) |
| 17740 | Instead of correspondence of proposition to fact, look at correspondence of its parts [Jenkins] |
| Full Idea: Instead of considering only a proposition's 'correspondence to the facts', we should also consider the correspondence between parts of the proposition and parts of the world (a 'correspondence-as-congruence' view). | |
| From: Carrie Jenkins (Grounding Concepts [2008], Final - Branching) | |
| A reaction: This is something like Russell's Othello example (1912), except that the parts there, with relations seemed to add up to the whole proposition. For Jenkins, presumably parts might correspond, but the whole proposition fail to. |
| 17730 | Combining the concepts of negation and finiteness gives the concept of infinity [Jenkins] |
| Full Idea: We might arrive to the concept of infinity by composing concepts of negation and finiteness. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 5.3) | |
| A reaction: Presumably lots of concepts can be arrived at by negating prior concepts (such as not-wet, not-tall, not-loud, not-straight). So not-infinite is perfectly plausible, and is a far better account than some a priori intuition of pure infinity. Love it. |
| 17719 | Arithmetic concepts are indispensable because they accurately map the world [Jenkins] |
| Full Idea: The indispensability of arithmetical concepts is evidence that they do in fact accurately represent features of the independent world. | |
| From: Carrie Jenkins (Grounding Concepts [2008], Intro) | |
| A reaction: This seems to me to be by far the best account of the matter. So why is the world so arithmetical? Dunno, mate; ask someone else. |
| 17717 | Senses produce concepts that map the world, and arithmetic is known through these concepts [Jenkins] |
| Full Idea: I propose that arithmetical truths are known through an examination of our own arithmetical concepts; that basic arithmetical concepts map the arithmetical structure of the world; that the map obtains in virtue of our normal sensory apparatus. | |
| From: Carrie Jenkins (Grounding Concepts [2008], Pref) | |
| A reaction: She defends the nice but unusual position that arithmetical knowledge is both a priori and empirical (so that those two notions are not, as usually thought, opposed). I am a big Carrie Jenkins fan. |
| 17724 | It is not easy to show that Hume's Principle is analytic or definitive in the required sense [Jenkins] |
| Full Idea: A problem for the neo-Fregeans is that it has not proved easy to establish that Hume's Principle is analytic or definitive in the required sense. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 4.3) | |
| A reaction: It is also asked how we would know the principle, if it is indeed analytic or definitional (Jenkins p.119). |
| 17727 | We can learn about the world by studying the grounding of our concepts [Jenkins] |
| Full Idea: What concept grounding does for us is ensure that our concepts, like the results of our empirical tests, can be treated as a source of information about the independent world. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 4.4) | |
| A reaction: Presumably we learn our concepts hand-in-hand with experience, so learning our concepts is itself learning about the world. Later checking of concepts and their relations largely confirms what we already knew? |
| 17720 | There's essential, modal, explanatory, conceptual, metaphysical and constitutive dependence [Jenkins, by PG] |
| Full Idea: Dependence comes in essential, modal, explanatory, conceptual, metaphysical and constitutive forms. | |
| From: report of Carrie Jenkins (Grounding Concepts [2008], 1.2) by PG - Db (ideas) | |
| A reaction: You'll have to look up Jenkins for the details. |
| 17728 | The concepts we have to use for categorising are ones which map the real world well [Jenkins] |
| Full Idea: Concepts which are indispensably useful for categorising, understanding, explaining, and predicting our sensory input are likely to be ones which map the structure of that input well. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 4.6) | |
| A reaction: Anti-realists about classification seem to think that we just invent an array of concepts, and then start classifying with them. The truth seems to be that the actual classes of worldly thing have generated our concepts. |
| 21259 | To grasp a thing we need its name, its definition, and what it really is [Plato] |
| Full Idea: There are three elements in any given thing: the first is what the object actually is, the second is the definition of this, and the third is the name. | |
| From: Plato (The Laws [c.348 BCE], 895d) | |
| A reaction: I take the importance of this to be its distinction between what it is, and the definition of what it is. Aristotle maintains this distinction, but some modern Aristotelians seem to get the confused. Plato worried a lot more about names than we do. |
| 17726 | Examining accurate, justified or grounded concepts brings understanding of the world [Jenkins] |
| Full Idea: Examining accurate concepts can help us acquire true beliefs about the world, examining justified concepts can help us acquire justified beliefs about the world, and examining grounded concepts can help us acquire knowledge of it. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 4.4) | |
| A reaction: This summarises Jenkins's empirical account of concepts, and I love it all to bits. I feel that contemporary philosophy is beginning to produce a coherent naturalistic worldview which can replace religion. Bar the rituals. We can have priests... |
| 17734 | It is not enough that intuition be reliable - we need to know why it is reliable [Jenkins] |
| Full Idea: The mere reliability of intuition is not a satisfactory ground for saying it is a source of knowledge - we need to know why it is reliable to understand whether it can be a source of knowledge. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 6.5) | |
| A reaction: My theory is that intuition is simply believing things for reasons which we have either forgotten, or (more likely) reasons which are too complex or subtle to be articulated. Intuition feels rational, because it is rational. Updated view of mind needed. |
| 17723 | Knowledge is true belief which can be explained just by citing the proposition believed [Jenkins] |
| Full Idea: I propose that knowledge is true belief which can be well explained .....just by citing the proposition believed. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 3.1) | |
| A reaction: I don't find this appealing, and my reservation about Jenkins's book is her reliabilist, externalist epistemology. I would add an internalist coherentist epistemology to her very nice theory. 'I believe there are fairies at the bottom of my garden'? |
| 21260 | Soul is what is defined by 'self-generating motion' [Plato] |
| Full Idea: The entity which we call 'soul' is precisely that which is defined by the expression 'self-generating motion'. | |
| From: Plato (The Laws [c.348 BCE], 896a) | |
| A reaction: We may suspect that he defines soul in this way for a particular context, aimed at proving the existence of a First Mover. He must think there is more to soul than the generation of movement. |
| 276 | My individuality is my soul, which carries my body around [Plato] |
| Full Idea: While I am alive I have nothing to thank for my individuality except my soul, whereas my body is just the likeness that I carry around with me. | |
| From: Plato (The Laws [c.348 BCE], 959a) |
| 17718 | Grounded concepts are trustworthy maps of the world [Jenkins] |
| Full Idea: Grounded concepts are like trustworthy on-board maps of the independent world. | |
| From: Carrie Jenkins (Grounding Concepts [2008], Intro) | |
| A reaction: You'll probably need more than one concept for it to qualify as a 'map', but I like this idea a lot. The world, rather than we ourselves, creates our concepts. The opposite of the view of Geach in 'Mental Acts'. |
| 17739 | The physical effect of world on brain explains the concepts we possess [Jenkins] |
| Full Idea: I think the physical effects of the world on the brain explain our possessing the concepts we do. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 8.2) | |
| A reaction: A nice slogan for a thought which strikes me as exactly right. |
| 19087 | The meaning or purport of a symbol is all the rational conduct it would lead to [Peirce] |
| Full Idea: The entire intellectual purport of any symbol consists in the total of all modes of rational conduct which, conditionally upon all the possible different circumstances and desires, would ensue upon the acceptance of the symbol. | |
| From: Charles Sanders Peirce (Issues of Pragmaticism [1905], EP ii.246), quoted by Danielle Macbeth - Pragmatism and Objective Truth p.169 n1 | |
| A reaction: Macbeth says pragmatism is founded on this theory of meaning, rather than on a theory of truth. I don't see why the causes of a symbol shouldn't be as much a part of its meaning as the consequences are. |
| 17731 | Verificationism is better if it says meaningfulness needs concepts grounded in the senses [Jenkins] |
| Full Idea: I find an updated verificationism plausible, in which we say something meaningful just in case we employ only concepts whose possession could be justified or disjustified by sensory input. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 5.6) | |
| A reaction: Wow! This is the first time I have ever had the slightest sympathy for verificationism. It saves my favourite problem case - of wild but meaningful speculation, for example about the contents of another universe. A very nice idea. |
| 17732 | Success semantics explains representation in terms of success in action [Jenkins] |
| Full Idea: Success semantics is the attempt to understand mental representation by thinking about the ways in which representing the world can lead to success in action. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 6.3) | |
| A reaction: I take this to be what is also known as 'teleological semantics'. It sounds to me as if this might help to explain success in action, but isn't going to explain the representations that result in the success. |
| 17725 | 'Analytic' can be conceptual, or by meaning, or predicate inclusion, or definition... [Jenkins] |
| Full Idea: 'Analytic' might mean conceptually true, or true in virtue of meaning, or where the predicate is contained in the subject, or for sentences which define something, or where meaning is sufficient for the truth. | |
| From: Carrie Jenkins (Grounding Concepts [2008], 4.3) | |
| A reaction: The second one says meaning grounds the truth, where the last one says meaning entails the truth. |
| 249 | People who value beauty above virtue insult the soul by placing the body above it [Plato] |
| Full Idea: When a man values beauty above virtue, the disrespect he shows his soul is total and fundamental, because he argues that the body is more to be honoured than the soul. | |
| From: Plato (The Laws [c.348 BCE], 727e) |
| 265 | An action is only just if it is performed by someone with a just character and outlook [Plato] |
| Full Idea: The description 'just' is applicable only to the benefit conferred or injury inflicted by someone with a just character and outlook. | |
| From: Plato (The Laws [c.348 BCE], 862b) | |
| A reaction: How should we describe the occasional administering of good justice by a generally wicked judge. Greeks focus on character, but moderns focus on actions. |
| 269 | Attempted murder is like real murder, but we should respect the luck which avoided total ruin [Plato] |
| Full Idea: An attempted murder should be treated like a successful one, but with respect shown for the luck which saved him from total ruin. | |
| From: Plato (The Laws [c.348 BCE], 877a) | |
| A reaction: The earliest reference to moral luck, I think. 'Repect' sounds vague, but it is asking judges to 'take it into consideration', which is quite practical. Attempted murderers are just as dangerous. |
| 240 | It would be strange if the gods rewarded those who experienced the most pleasure in life [Plato] |
| Full Idea: It would be strange if the gods gave the greatest rewards in heaven to those who led the most pleasant life, rather than the most just. | |
| From: Plato (The Laws [c.348 BCE], 662c) | |
| A reaction: All of philosophy is just footnotes to Plato.... See Idea 1454. |
| 264 | The conquest of pleasure is the noblest victory of all [Plato] |
| Full Idea: The conquest of pleasure is the noblest victory of all. | |
| From: Plato (The Laws [c.348 BCE], 840c) | |
| A reaction: Plato's puritanical streak. Even Aristotle doesn't agree with this. Self-control does not imply conquest of pleasure. Has a good professional wine taster conquered pleasure? |
| 4332 | Virtue is a concord of reason and emotion, with pleasure and pain trained to correct ends [Plato] |
| Full Idea: Virtue is the general concord of reason and emotion, but there is one key element, which is the correct formation of our feelings of pleasure and pain, which makes us hate what we ought to hate, and love what we ought to love. | |
| From: Plato (The Laws [c.348 BCE], 653c) | |
| A reaction: An important truth, taken up by Aristotle. To see another person humiliated gives some people pleasure and other people pain. |
| 248 | A serious desire for moral excellence is very rare indeed [Plato] |
| Full Idea: People who are anxious to attain moral excellence with all possible speed are pretty thin on the ground. | |
| From: Plato (The Laws [c.348 BCE], 718e) |
| 253 | Every crime is the result of excessive self-love [Plato] |
| Full Idea: The cause of each and every crime we commit is precisely this excessive love of ourselves. | |
| From: Plato (The Laws [c.348 BCE], 731e) |
| 263 | The only worthwhile life is one devoted to physical and moral perfection [Plato] |
| Full Idea: A life devoted to every physical perfection and every moral virtue is the only life worth the name. | |
| From: Plato (The Laws [c.348 BCE], 807c) |
| 235 | Virtue is the aim of all laws [Plato] |
| Full Idea: Virtue is the aim of the laws the legislator lays down. | |
| From: Plato (The Laws [c.348 BCE], 631a) |
| 277 | The Guardians must aim to discover the common element in the four cardinal virtues [Plato] |
| Full Idea: The guardians of the state should aim to get an exact idea of the common element in all the four virtues. | |
| From: Plato (The Laws [c.348 BCE], 965d) |
| 254 | Excessive laughter and tears must be avoided [Plato] |
| Full Idea: Excessive laughter and tears must be avoided. | |
| From: Plato (The Laws [c.348 BCE], 732c) |
| 266 | Injustice is the mastery of the soul by bad feelings, even if they do not lead to harm [Plato] |
| Full Idea: My general description of injustice is this: the mastery of the soul by anger, fear, pleasure, pain, envy and desires, whether they lead to actual damage or not. | |
| From: Plato (The Laws [c.348 BCE], 863e) |
| 242 | The best people are produced where there is no excess of wealth or poverty [Plato] |
| Full Idea: The community in which neither wealth nor poverty exists will produce the finest characters. | |
| From: Plato (The Laws [c.348 BCE], 679b) |
| 256 | Virtue and great wealth are incompatible [Plato] |
| Full Idea: Virtue and great wealth are quite incompatible. | |
| From: Plato (The Laws [c.348 BCE], 742e) |
| 245 | Totalitarian states destroy friendships and community spirit [Plato] |
| Full Idea: Excessively authoritarian government destroys all friendship and community of spirit in the state. | |
| From: Plato (The Laws [c.348 BCE], 697d) |
| 239 | Education in virtue produces citizens who are active but obedient [Plato] |
| Full Idea: Education in virtue produces a keen desire to become a perfect citizen who knows how to rule and be ruled as justice demands. | |
| From: Plato (The Laws [c.348 BCE], 643e) |
| 1402 | Friendship is impossible between master and slave, even if they are made equal [Plato] |
| Full Idea: Even if you proclaim that a master and a slave shall have equal status, friendship between them is inherently impossible. | |
| From: Plato (The Laws [c.348 BCE], 757a) |
| 262 | Men and women should qualify equally for honours on merit [Plato] |
| Full Idea: Men and women who have shown conspicuous merit should qualify for all honours without distinction of sex. | |
| From: Plato (The Laws [c.348 BCE], 802a) |
| 236 | Sound laws achieve the happiness of those who observe them [Plato] |
| Full Idea: Sound laws achieve the happiness of those who observe them. | |
| From: Plato (The Laws [c.348 BCE], 631b) |
| 259 | Justice is granting the equality which unequals deserve [Plato] |
| Full Idea: Justice consists of granting the 'equality' which unequals deserve to get. | |
| From: Plato (The Laws [c.348 BCE], 757d) | |
| A reaction: Beautifully simple, and hard to improve on. It shows the close link between equality and justice, but shows why they are not the same. The main debate about justice concerns the criteria for 'deserving'. |
| 257 | Mathematics has the widest application of any subject on the curriculum [Plato] |
| Full Idea: For domestic and public purposes, and all professional skills, no branch of a child's education has as big a range of applications as mathematics. | |
| From: Plato (The Laws [c.348 BCE], 747a) |
| 238 | Children's games should channel their pleasures into adult activity [Plato] |
| Full Idea: We should use children's games to channel their pleasures and desires towards activities in which they will have to engage when they are adult. | |
| From: Plato (The Laws [c.348 BCE], 643c) |
| 260 | Control of education is the key office of state, and should go to the best citizen [Plato] |
| Full Idea: The Minister of Education is by far the most important of all the supreme offices of the state; the best all-round citizen in the state should be appointed. | |
| From: Plato (The Laws [c.348 BCE], 765e) |
| 4331 | Education is channelling a child's feelings into the right course before it understands why [Plato] |
| Full Idea: I call 'education' the initial acquisition of virtue by the child, when the feelings of pleasure and affection, pain and hatred, are channelled in the right courses before he can understand the reason why. | |
| From: Plato (The Laws [c.348 BCE], 653b) | |
| A reaction: A precursor of Aristotle's view (Ethics 1104b11). A profound, simple and important insight. |
| 250 | The best way to educate the young is not to rebuke them, but to set a good example [Plato] |
| Full Idea: The best way to educate the younger generation (as well as yourself) is not to rebuke them but patently to practise all your life what you preach to others. | |
| From: Plato (The Laws [c.348 BCE], 729c) |
| 275 | Creation is not for you; you exist for the sake of creation [Plato] |
| Full Idea: Creation is not for your benefit; you exist for the sake of the universe. | |
| From: Plato (The Laws [c.348 BCE], 903c) |
| 273 | Movement is transmitted through everything, and it must have started with self-generated motion [Plato] |
| Full Idea: Motion is transmitted to innumerable things, and this must spring from some initial principle, which must be the change effected by self-generated motion. | |
| From: Plato (The Laws [c.348 BCE], 895a) |
| 8004 | In 'The Laws', to obey the law is to be obey god [Plato, by MacIntyre] |
| Full Idea: The divine is important in 'The Laws' because it is identified with law; to be obedient before the law is to be obedient before god. | |
| From: report of Plato (The Laws [c.348 BCE]) by Alasdair MacIntyre - A Short History of Ethics Ch.6 | |
| A reaction: Christian conservativism in a nutshell. Plato is rejecting his view in Euthyphro that piety (etc.) must precede the will of the gods. The obvious problem is bad laws, made by corrupt rulers. |
| 21261 | Self-moving soul has to be the oldest thing there is [Plato] |
| Full Idea: Soul, being the source of motion, is the most ancient thing there is. | |
| From: Plato (The Laws [c.348 BCE], 896b) | |
| A reaction: Plato seems to assume that the First Mover must still exist, which doesn't follow from anything in the argument. The First Pusher could be dead before the last domino falls. Why can't activity be the default state of everything? |
| 21258 | The only possible beginning for the endless motions of reality is something self-generated [Plato] |
| Full Idea: When the motion in reality is transmitted to thousands of things one after another, the entire sequence of their movements must surely spring from some initial principle, which can hardly be anything except the change effected by self-generated motion. | |
| From: Plato (The Laws [c.348 BCE], 895a) | |
| A reaction: This gives a domino picture of reality, with all of reality responding inertly to a first kick. Much better is to see self-generated motion in the active qualities of all matter, as seen in the sea of virtual subatomic particles at the smallest level. |
| 21257 | Self-generating motion is clearly superior to all other kinds of motion [Plato] |
| Full Idea: We can't resist the conclusion that the motion which can generate itself is infinitely superior, and all the others are inferior to it. | |
| From: Plato (The Laws [c.348 BCE], 894d) | |
| A reaction: Who said you can't get values from facts! Not that the argument depends on superiority. There could be an inferior First Mover, as a bus driver is subservient to the passengers, or (my favourite) a head teacher is inferior to the pupils. |
| 274 | Soul must be the cause of all the opposites, such as good and evil or beauty and ugliness [Plato] |
| Full Idea: Soul must be cause of good and evil, beauty and ugliness, justice and injustice, and all the opposites. | |
| From: Plato (The Laws [c.348 BCE], 896d) |
| 21263 | If all the motions of nature reflect calculations of reason, then the best kind of soul must direct it [Plato] |
| Full Idea: If the movement of the heavens and all that is in them reflects the motion and revolution and calculation of reason ...then clearly we have to admit that it is the best kind of soul that cares for the entire universe and directs it along the best path. | |
| From: Plato (The Laws [c.348 BCE], 897c) | |
| A reaction: Most of this passage reflects the cosmological argument - that without some initiating source natural events could not occur - but this slides into the design argument. So who designed mud (which is too inferior to have a Form)? |
| 278 | If astronomical movements are seen as necessary instead of by divine will, this leads to atheism [Plato] |
| Full Idea: If a man studying astronomy sees events apparently happening by necessity rather than being directed by the intention of a benevolent will, he will turn into an atheist. | |
| From: Plato (The Laws [c.348 BCE], 967a) |
| 21265 | The heavens must be full of gods, controlling nature either externally or from within [Plato] |
| Full Idea: A soul or souls have been shown to be cause of all the phenomena, and whether it is by their living presence in matter that they direct all the heavens, or by some other means, we insist that these souls are gods. So 'everything is full of gods'. | |
| From: Plato (The Laws [c.348 BCE], 899b) | |
| A reaction: This seems to have little to do with the pagan gods on Olympus. It is also notably not monotheistic. It is somewhere between animism and panpsychism. Does he think the rivers and woods contain gods? Probably not. Just the orderly heavens. |
| 21262 | There must be at least two souls controlling the cosmos, one doing good, the other the opposite [Plato] |
| Full Idea: There must be more than one soul (not fewer than two) controlling movement and the heavens: that which does good, and that which has the opposite capacity. | |
| From: Plato (The Laws [c.348 BCE], 896e) | |
| A reaction: [Wording compressed - as often with the dialogues] This idea of controlling opposites is found in Empedocles. Presumably this good soul defers to the Form of the Good, as implied by the Euthyphro Question. |