48 ideas
| 19917 | Without reason and human help, human life is misery [Spinoza] |
| Full Idea: Without mutual help and the cultivation of reason, human beings necessarily live in great misery. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.05) | |
| A reaction: A clarion call from a great voice of the Enlightenment. I agree, but in 2017 the rest of western civilization seems to have given up on this ideal. I blame Adorno and Horkheimer. |
| 18806 | Frege thought traditional categories had psychological and linguistic impurities [Frege, by Rumfitt] |
| Full Idea: Frege rejected the traditional categories as importing psychological and linguistic impurities into logic. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by Ian Rumfitt - The Boundary Stones of Thought 1.2 | |
| A reaction: Resisting such impurities is the main motivation for making logic entirely symbolic, but it doesn't follow that the traditional categories have to be dropped. |
| 8490 | First-level functions have objects as arguments; second-level functions take functions as arguments [Frege] |
| Full Idea: Just as functions are fundamentally different from objects, so also functions whose arguments are and must be functions are fundamentally different from functions whose arguments are objects. The latter are first-level, the former second-level, functions. | |
| From: Gottlob Frege (Function and Concept [1891], p.38) | |
| A reaction: In 1884 he called it 'second-order'. This is the standard distinction between first- and second-order logic. The first quantifies over objects, the second over intensional entities such as properties and propositions. |
| 8492 | Relations are functions with two arguments [Frege] |
| Full Idea: Functions of one argument are concepts; functions of two arguments are relations. | |
| From: Gottlob Frege (Function and Concept [1891], p.39) | |
| A reaction: Nowadays we would say 'two or more'. Another interesting move in the aim of analytic philosophy to reduce the puzzling features of the world to mathematical logic. There is, of course, rather more to some relations than being two-argument functions. |
| 18256 | Quantity is inconceivable without the idea of addition [Frege] |
| Full Idea: There is so intimate a connection between the concepts of addition and of quantity that one cannot begin to grasp the latter without the former. | |
| From: Gottlob Frege (Rechnungsmethoden (dissertation) [1874], p.2), quoted by Michael Dummett - Frege philosophy of mathematics 22 'Quantit' | |
| A reaction: Frege offers good reasons for making cardinals prior to ordinals, though plenty of people disagree. |
| 9831 | Geometry appeals to intuition as the source of its axioms [Frege] |
| Full Idea: The elements of all geometrical constructions are intuitions, and geometry appeals to intuition as the source of its axioms. | |
| From: Gottlob Frege (Rechnungsmethoden (dissertation) [1874], Ch.6), quoted by Michael Dummett - Frege philosophy of mathematics | |
| A reaction: Very early Frege, but he stuck to this view, while firmly rejecting intuition as a source of arithmetic. Frege would have known well that Euclid's assumption about parallels had been challenged. |
| 8487 | Arithmetic is a development of logic, so arithmetical symbolism must expand into logical symbolism [Frege] |
| Full Idea: I am of the opinion that arithmetic is a further development of logic, which leads to the requirement that the symbolic language of arithmetic must be expanded into a logical symbolism. | |
| From: Gottlob Frege (Function and Concept [1891], p.30) | |
| A reaction: This may the the one key idea at the heart of modern analytic philosophy (even though logicism may be a total mistake!). Logic and arithmetical foundations become the master of ontology, instead of the servant. The jury is out on the whole enterprise. |
| 18899 | Frege takes the existence of horses to be part of their concept [Frege, by Sommers] |
| Full Idea: Frege regarded the existence of horses as a property of the concept 'horse'. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by Fred Sommers - Intellectual Autobiography 'Realism' |
| 4028 | Frege allows either too few properties (as extensions) or too many (as predicates) [Mellor/Oliver on Frege] |
| Full Idea: Frege's theory of properties (which he calls 'concepts') yields too few properties, by identifying coextensive properties, and also too many, by letting every predicate express a property. | |
| From: comment on Gottlob Frege (Function and Concept [1891]) by DH Mellor / A Oliver - Introduction to 'Properties' §2 | |
| A reaction: Seems right; one extension may have two properties (have heart/kidneys), two predicates might express the same property. 'Cutting nature at the joints' covers properties as well as objects. |
| 8489 | The concept 'object' is too simple for analysis; unlike a function, it is an expression with no empty place [Frege] |
| Full Idea: I regard a regular definition of 'object' as impossible, since it is too simple to admit of logical analysis. Briefly: an object is anything that is not a function, so that an expression for it does not contain any empty place. | |
| From: Gottlob Frege (Function and Concept [1891], p.32) | |
| A reaction: Here is the core of the programme for deriving our ontology from our logic and language, followed through by Russell and Quine. Once we extend objects beyond the physical, it becomes incredibly hard to individuate them. |
| 19922 | People are only free if they are guided entirely by reason [Spinoza] |
| Full Idea: The only genuinely free person is one who lives with his entire mind guided solely by reason. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.10) | |
| A reaction: It strikes me as blatantly impossible to be entirely guided by reason. His point is that it is a subservience to reason which is entirely chosen. Why is that different from choosing to be entirely subservient to another person? |
| 9947 | Concepts are the ontological counterparts of predicative expressions [Frege, by George/Velleman] |
| Full Idea: Concepts, for Frege, are the ontological counterparts of predicative expressions. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by A.George / D.J.Velleman - Philosophies of Mathematics Ch.2 | |
| A reaction: That sounds awfully like what many philosophers call 'universals'. Frege, as a platonist (at least about numbers), I would take to be in sympathy with that. At least we can say that concepts seem to be properties. |
| 10319 | An assertion about the concept 'horse' must indirectly speak of an object [Frege, by Hale] |
| Full Idea: Frege had a notorious difficulty over the concept 'horse', when he suggests that if we wish to assert something about a concept, we are obliged to proceed indirectly by speaking of an object that represents it. | |
| From: report of Gottlob Frege (Function and Concept [1891], Ch.2.II) by Bob Hale - Abstract Objects | |
| A reaction: This sounds like the thin end of a wedge. The great champion of objects is forced to accept them here as a façon de parler, when elsewhere they have ontological status. |
| 8488 | A concept is a function whose value is always a truth-value [Frege] |
| Full Idea: A concept in logic is closely connected with what we call a function. Indeed, we may say at once: a concept is a function whose value is always a truth-value. ..I give the name 'function' to what is meant by the 'unsaturated' part. | |
| From: Gottlob Frege (Function and Concept [1891], p.30) | |
| A reaction: So a function becomes a concept when the variable takes a value. Problems arise when the value is vague, or the truth-value is indeterminable. |
| 9948 | Unlike objects, concepts are inherently incomplete [Frege, by George/Velleman] |
| Full Idea: For Frege, concepts differ from objects in being inherently incomplete in nature. | |
| From: report of Gottlob Frege (Function and Concept [1891]) by A.George / D.J.Velleman - Philosophies of Mathematics Ch.2 | |
| A reaction: This is because they are 'unsaturated', needing a quantified variable to complete the sentence. This could be a pointer towards Quine's view of properties, as simply an intrinsic feature of predication about objects, with no separate identity. |
| 4972 | I may regard a thought about Phosphorus as true, and the same thought about Hesperus as false [Frege] |
| Full Idea: From sameness of meaning there does not follow sameness of thought expressed. A fact about the Morning Star may express something different from a fact about the Evening Star, as someone may regard one as true and the other false. | |
| From: Gottlob Frege (Function and Concept [1891], p.14) | |
| A reaction: This all gets clearer if we distinguish internalist and externalist theories of content. Why take sides on this? Why not just ask 'what is in the speaker's head?', 'what does the sentence mean in the community?', and 'what is the corresponding situation?' |
| 19935 | Peoples are created by individuals, not by nature, and only distinguished by language and law [Spinoza] |
| Full Idea: Nature certainly does not create peoples, individuals do, and individuals are only separated into nations by differences of language, law and morality. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.26) | |
| A reaction: Quite wrong, I think. How did languages evolve if there were not already distinct peoples? Do ants and bees only form into colonies by individual choice? All social contract theories seem to make Spinoza's assumption. |
| 19914 | In nature everything has an absolute right to do anything it is capable of doing [Spinoza] |
| Full Idea: Since the universal power of nature is only the power of all individual things together, it follows that each individual thing has the sovereign right to do everything it can do, or the right of each thing extends as far as its determined power extends. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.01) | |
| A reaction: A typically ruthless Spinoza idea, very different from the rather ill-founded claims of Locke and Rousseau about the state of nature. |
| 19915 | Natural rights are determined by desire and power, not by reason [Spinoza] |
| Full Idea: Each person's natural right is determined not by sound reason but by desire and power. For it is not the case that all men are naturally determined to behave according to the rules and laws of reason | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.03) | |
| A reaction: Locke would have been horrified by this. It looks like hopeless unfounded optimism to claim a natural right to anything. Doomed prey can struggle all it likes, but its right to do so seems irrelevant. Yet we see self-evident injustice all the time. |
| 7487 | Society exists to extend human awareness [Spinoza, by Watson] |
| Full Idea: For Spinoza the purpose of society was the extension of human awareness. | |
| From: report of Baruch de Spinoza (Tractatus Theologico-Politicus [1670]) by Peter Watson - Ideas Ch.24 | |
| A reaction: I like that. Personally I think human understanding is the best aim our lives can have, but I am inclined to see this in rather individualistic terms (despairing of getting others interested in the project!). |
| 19943 | The state aims to allow personal development, so its main purpose is freedom [Spinoza] |
| Full Idea: It is the purpose of the state ...to allow people's minds and bodies to develop in their own way in security and enjoy the free use of reason ...Therefore the true purpose of the state is in fact freedom. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 20.06) | |
| A reaction: The core of Spinoza's political thinking. This strikes me as being as close to communitarianism as to liberalism. |
| 19930 | Sovereignty must include the power to make people submit to it [Spinoza] |
| Full Idea: Either there is no sovereignty nor any right over subjects, or else sovereignty must necessarily extend to everything that might be effective in inducing men to submit to it. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.02) | |
| A reaction: In the seventeenth century this usually includes the death penalty. Refusal to submit may be fairly passive and harmless, so the issue must concern duties, rather than rights. Taxes, jury duty, calls to arms. |
| 19936 | Kings tend to fight wars for glory, rather than for peace and liberty [Spinoza] |
| Full Idea: As soon as the kings took control [of the Hebrews] the reason for going to war was no longer peace and liberty but rather glory, | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 18.05) | |
| A reaction: As Spinoza was writing, Louis XIV had just invaded Holland, solely in quest of military glory. As soon as a leader like Napoleon discovers they are good at war, I assume that the thrill of glory takes over for them too. |
| 19937 | Monarchs are always proud, and can't back down [Spinoza] |
| Full Idea: Monarchical minds are always proud, and cannot back down without feelings of humiliation. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 18.05) | |
| A reaction: This would seem to be a problem in all politicians. As I teacher I found that backing down was sometimes quite a smart move, but you can only do it occasionally. |
| 19940 | Deposing a monarch is dangerous, because the people are used to royal authority [Spinoza] |
| Full Idea: It is dangerous to depose a monarch, even if it is clear by every criterion that he is a tyrant. A people accustomed to royal authority and held in check only by it, will despise any lesser authority and hold it in contempt. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 18.07) | |
| A reaction: He is obviously thinking of Charles I and Cromwell. I suspect that the respect for Cromwell in the 1650s was only as a great soldier. If the people miss royal authority, the correct response is probably 'get over it!' |
| 19931 | Every state is more frightened of its own citizens than of external enemies [Spinoza] |
| Full Idea: People have never succeeded in devising a form of government that was not in greater danger from its own citizens than from foreign foes, and which was not more fearful of the former than of the latter. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.04) | |
| A reaction: The sort of lovely clear-headed and accurate observation for which we love Spinoza. Only very powerful despots can afford to ignore the threat from the people. Stalin was paranoid, but eventually murdered almost everyone who seemed a threat. |
| 19920 | Democracy is a legitimate gathering of people who do whatever they can do [Spinoza] |
| Full Idea: Democracy is properly defined as a united gathering of people which collectively has the sovereign right to do all that it has the power to do. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.08) | |
| A reaction: Representative democracy doesn't fit this definition. What 'unites' the people, and where do they get their sovereign right? If my neighbouring village votes to invade mine, I spurn their pathetic 'sovereign right'. |
| 19933 | If religion is law, then piety is justice, impiety is crime, and non-believers must leave [Spinoza] |
| Full Idea: [In the first Hebrew state] religious dogmas were not doctrines but rather laws and decrees, piety being regarded as justice and impiety as crime. Anyone who defected from this religion ceased to be a citizen. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.08) | |
| A reaction: Presumably speeding offences count as impiety, and failing to pray is a crime. A critical question will be how far religious doubts must extend before one actually has to leave. Mere doctrinal differences, or full atheism? |
| 19938 | Allowing religious ministers any control of the state is bad for both parties [Spinoza] |
| Full Idea: How pernicious it is both for religion and the state to allow ministers of things sacred to acquire the right to make decrees or handle the business of government. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 18.06 (1)) | |
| A reaction: Interesting that he holds it to be bad for the religion as well as the state. In Britain we have bishops in the House of Lords. |
| 19923 | Slavery is not just obedience, but acting only in the interests of the master [Spinoza] |
| Full Idea: It is not acting on command in itself that makes someone a slave, but rather the reason for so acting. ...A slave is someone obliged to obey commands from a master which look only to the advantage of the master. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.10) | |
| A reaction: So if I forcibly enslaved you, and then only commanded things which were for your own good, that would not be slavery? If the master feeds the slave, is that not part of the slavery? Most jobs might count as slavery by this account? |
| 19939 | Government is oppressive if opinions can be crimes, because people can't give them up [Spinoza] |
| Full Idea: Government is bound to become extremely oppressive where dissident opinions which are within the domain of each individual, a right which no one can give up, are treated as a crime. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 18.06 (2)) | |
| A reaction: One might compare illicit desires, such as those of a paedophile, where it is a crime to act on them, but presumably they cannot be given up, so there is no point in legislating against the mere desires. |
| 19944 | Without liberty of thought there is no trust in the state, and corruption follows [Spinoza] |
| Full Idea: If liberty of thought is suppressed ...this would undemine the trust which is the first essential of a state; detestable flattery and deceit would flourish, giving rise to intrigues and every sort of honest behaviour. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 20.11) | |
| A reaction: Spinoza specifically defends philosophy, as the epitome of freedom of thought. |
| 19942 | Treason may be committed as much by words as by deeds [Spinoza] |
| Full Idea: We cannot altogether deny that treason may be committed as much by words as by deeds. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 20.05) | |
| A reaction: For example, betraying a major state secret. This is an important idea, for anyone who simplistically demands utter freedom of speech. There is also subversive speech, which is very hard to assess. Incitements can be crimes in Britain. |
| 19924 | The freest state is a rational one, where people can submit themselves to reason [Spinoza] |
| Full Idea: The freest state is that whose laws are founded on sound reason; for there each man can be free whenever he wishes, that is, he can live under the guidance of reason with his whole mind. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.10) | |
| A reaction: I wonder if is not so much that the state is rational as that it is right. Freedom is submission to the truth. Rationality is only good because it arrives at truth. But is there a 'truth' about how a state should be run? Enlightenment optimism. |
| 7827 | Spinoza wanted democracy based on individual rights, and is thus the first modern political philosopher [Stewart,M on Spinoza] |
| Full Idea: Spinoza's advocacy of democracy on the basis of individual rights was extraordinarily bold for its time, and it qualifies him as the first truly modern political philosopher. | |
| From: comment on Baruch de Spinoza (Tractatus Theologico-Politicus [1670]) by Matthew Stewart - The Courtier and the Heretic Ch. 6 | |
| A reaction: Sounds right. Hobbes may have been the 'first modern man', but his politics was fairly medieval. John Lilburne and co. may have campaigned for rights and democracy, but they weren't really philosophers. |
| 19926 | The sovereignty has absolute power over citizens [Spinoza] |
| Full Idea: No offence can be committed against subjects by sovereigns, since they are of right permitted to do all things., and therefore offences occur only between private persons obliged by law not to harm one another. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.14) | |
| A reaction: This slightly alarming remark is the consequence of Spinoza's denial of natural rights. Nowadays we have international law to appeal to. Locke thinks revolution could be justified, but this implies the Spinoza does not? |
| 19918 | Forming a society meant following reason, and giving up dangerous appetites and mutual harm [Spinoza] |
| Full Idea: People had to make a firm decision to decide everything by the sole dictates of reason (which no one dares contradict openly). They had to curb their appetites if it would hurt someone else, and not do to others what they did not want done to themselves. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.05) | |
| A reaction: The last bit invokes the Golden Rule. Being in society does indeed meaning curbing appetites, such as envy and lust. |
| 19919 | People only give up their rights, and keep promises, if they hope for some greater good [Spinoza] |
| Full Idea: No one will give up his right to all things, and absolutely no one will keep his promises, except from fear of a greater ill or hope of a greater good. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.06) | |
| A reaction: I think Locke and Rousseau would agree with this. It is hard to imagine doing anything other than in hope of a greater good. But what to do when your hopes are disappointed? |
| 19921 | Once you have given up your rights, there is no going back [Spinoza] |
| Full Idea: If people had wanted to keep any right for themselves, they should have made this provision at the same time as they could have safely defended it. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.08) | |
| A reaction: Spinoza is wonderful for grasping nettles. The other fans of social contracts seem blithely cheerful about how it is going to work out. But forming a society is like marriage - a risky commitment which could go horribly wrong. |
| 19925 | In democracy we don't abandon our rights, but transfer them to the majority of us [Spinoza] |
| Full Idea: In a democracy no one transfers their natural right to another in such a way that they are not thereafter consulted, but rather to the majority of the whole society of which they are part. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.11) | |
| A reaction: At this time democracy means Athenian direct democracy. In representative democracy you are only consulted once every few years, and in between the government can ignore the people (as Rousseau pointed out). |
| 19928 | No one, in giving up their power and right, ceases to be a human being [Spinoza] |
| Full Idea: No one will ever be able to transfer his power and (consequently) his right to another person in such a way that he ceases to be a human being. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.01) | |
| A reaction: Spinoza disdains natural rights, but this is a modest (and pretty uncontroversial) concession. |
| 19929 | Everyone who gives up their rights must fear the recipients of them [Spinoza] |
| Full Idea: People have never given up their right and transferred their power to another in such a way that they did not fear the very persons who received their right and power, and put the government at greater risk from its own citizens than from its enemies. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.01) | |
| A reaction: I take this idea to be Rousseau's key motivation for the idea of the general will, because you are there supposed to be alienating your natural rights to yourself (sort of). In a democracy you alienate them partly to yourself. |
| 19932 | The early Hebrews, following Moses, gave up their rights to God alone [Spinoza] |
| Full Idea: The Hebrews being in this natural state, they resolved, on the advice of Moses in whom they all had the greatest trust, to transfer their right to no mortal man but rather to God alone. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.07) | |
| A reaction: [He cites Exodus 24:7] He calls this the first Hebrew state, which seems to have depended heavily on Moses. Priests and prophets become crucial in this situation, and they may be in conflict about God's commands. |
| 19916 | The order of nature does not prohibit anything, and allows whatever appetite produces [Spinoza] |
| Full Idea: The order of nature, under which all human beings are born and for the most part live, prohibits nothing but what no one desires or no one can do; it does not prohibit strife or hatred or anger or anything at all that appetite foments. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.04) | |
| A reaction: This is as vigorous a rejection of natural law as I have met with. It is hard to see on what grounds anyone could disagree, other than hopeful sentiment. |
| 19927 | State and religious law can clash, so the state must make decisions about religion [Spinoza] |
| Full Idea: No one would be obliged by law if he considered it against his faith, and everyone could claim licence to do anything. Since the law of the state would then be wholly violated, it follows that the right of deciding about religion belongs to the sovereign. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 16.21) | |
| A reaction: This is an era when British puritans emigrate to America, because the state is not sufficiently tolerant. The needs of sovereignty and of religion can be very far apart. You can see those with great religious devotion not liking this idea. |
| 8491 | The Ontological Argument fallaciously treats existence as a first-level concept [Frege] |
| Full Idea: The ontological proof of God's existence suffers from the fallacy of treating existence as a first-level concept. | |
| From: Gottlob Frege (Function and Concept [1891], p.38 n) | |
| A reaction: [See Idea 8490 for first- and second-order functions] This is usually summarised as the idea that existence is a quantifier rather than a predicate. |
| 19934 | Hebrews were very hostile to other states, who had not given up their rights to God [Spinoza] |
| Full Idea: Having transferred their right to God, the Hebrews believed their kingdom was the kingdom of God, that they alone were the children of God, and that other nations were enemies of God, whom for that reason they regarded with extreme hostility. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670], 17.23) | |
| A reaction: [He cites Psalm 139:21-2] So, according to Spinoza, they did not become the chosen people because they thought God had chosen then, but because they were the only state trying to align itself with God. |
| 4300 | The Bible has nothing in common with reasoning and philosophy [Spinoza] |
| Full Idea: The Bible leaves reason absolutely free and has nothing in common with philosophy. | |
| From: Baruch de Spinoza (Tractatus Theologico-Politicus [1670]) | |
| A reaction: Hm. The Bible may not contain reasoning, but it contains the fruits of reasoning, and it is obviously possible for reasoning to contradict its message. |