145 ideas
| 11461 | 323 (roughly): Euclid wrote 'Elements', summarising all of geometry [PG] |
| 11390 | 1000 (roughly): Upanishads written (in Sanskrit); religious and philosophical texts [PG] |
| 11391 | 750 (roughly): the Book of Genesis written by Hebrew writers [PG] |
| 11392 | 586: eclipse of the sun on the coast of modern Turkey was predicted by Thales of Miletus [PG] |
| 11395 | 570: Anaximander flourished in Miletus [PG] |
| 11396 | 563: the Buddha born in northern India [PG] |
| 11398 | 540: Lao Tzu wrote 'Tao Te Ching', the basis of Taoism [PG] |
| 11400 | 529: Pythagoras created his secretive community at Croton in Sicily [PG] |
| 11403 | 500: Heraclitus flourishes at Ephesus, in modern Turkey [PG] |
| 11404 | 496: Confucius travels widely, persuading rulers to be more moral [PG] |
| 11408 | 472: Empedocles persuades his city (Acragas in Sicily) to become a democracy [PG] |
| 11412 | 450 (roughly): Parmenides and Zeno visit Athens from Italy [PG] |
| 11414 | 445: Protagoras helps write laws for the new colony of Thurii [PG] |
| 11417 | 436 (roughly): Anaxagoras is tried for impiety, and expelled from Athens [PG] |
| 11421 | 427: Gorgias visited Athens as ambassador for Leontini [PG] |
| 11425 | 399: Socrates executed (with Plato absent through ill health) [PG] |
| 11432 | 387 (roughly): Plato returned to Athens, and founded the Academy [PG] |
| 11433 | 387 (roughly): Aristippus the Elder founder a hedonist school at Cyrene [PG] |
| 11440 | 367: the teenaged Aristotle came to study at the Academy [PG] |
| 11443 | 360 (roughly): Diogenes of Sinope lives in a barrel in central Athens [PG] |
| 11445 | 347: death of Plato [PG] |
| 11454 | 343: Aristotle becomes tutor to 13 year old Alexander (the Great) [PG] |
| 11456 | 335: Arisotle founded his school at the Lyceum in Athens [PG] |
| 11459 | 330 (roughly): Chuang Tzu wrote his Taoist book [PG] |
| 11465 | 322: Aristotle retired to Chalcis, and died there [PG] |
| 11468 | 307 (roughly): Epicurus founded his school at the Garden in Athens [PG] |
| 11470 | 301 (roughly): Zeno of Citium founded Stoicism at the Stoa Poikile in Athens [PG] |
| 11483 | 261: Cleanthes replaced Zeno as head of the Stoa [PG] |
| 11486 | 229 (roughly): Chrysippus replaced Cleanthes has head of the Stoa [PG] |
| 11492 | 157 (roughly): Carneades became head of the Academy [PG] |
| 11509 | 85: most philosophical activity moves to Alexandria [PG] |
| 11513 | 78: Cicero visited the stoic school on Rhodes [PG] |
| 11516 | 60 (roughly): Lucretius wrote his Latin poem on epicureanism [PG] |
| 11528 | 65: Seneca forced to commit suicide by Nero [PG] |
| 11531 | 80: the discourses of the stoic Epictetus are written down [PG] |
| 11535 | 170 (roughly): Marcus Aurelius wrote his private stoic meditations [PG] |
| 11537 | -200 (roughly): Sextus Empiricus wrote a series of books on scepticism [PG] |
| 11541 | 263: Porphyry began to study with Plotinus in Rome [PG] |
| 11545 | 310: Christianity became the official religion of the Roman empire [PG] |
| 11549 | 387: Ambrose converts Augustine to Christianity [PG] |
| 11555 | 523: Boethius imprisoned at Pavia, and begins to write [PG] |
| 11557 | 529: the emperor Justinian closes all the philosophy schools in Athens [PG] |
| 11558 | 622 (roughly): Mohammed writes the Koran [PG] |
| 11559 | 642: Arabs close the philosophy schools in Alexandria [PG] |
| 11560 | 910 (roughly): Al-Farabi wrote Arabic commentaries on Aristotle [PG] |
| 11562 | 1015 (roughly): Ibn Sina (Avicenna) writes a book on Aristotle [PG] |
| 11564 | 1090: Anselm publishes his proof of the existence of God [PG] |
| 11566 | 1115: Abelard is the chief logic teacher in Paris [PG] |
| 11573 | 1166: Ibn Rushd (Averroes) wrote extensive commentaries on Aristotle [PG] |
| 11581 | 1266: Aquinas began writing 'Summa Theologica' [PG] |
| 11586 | 1280: after his death, the teaching of Aquinas becomes official Dominican doctrine [PG] |
| 11591 | 1328: William of Ockham decides the Pope is a heretic, and moves to Munich [PG] |
| 17916 | 1347: the Church persecutes philosophical heresies [PG] |
| 11593 | 1470: Marsilio Ficino founds a Platonic Academy in Florence [PG] |
| 11596 | 1513: Machiavelli wrote 'The Prince' [PG] |
| 11599 | 1543: Copernicus publishes his heliocentric view of the solar system [PG] |
| 11601 | 1580: Montaigne publishes his essays [PG] |
| 11607 | 1600: Giordano Bruno was burned at the stake in Rome [PG] |
| 11613 | 1619: Descartes's famous day of meditation inside a stove [PG] |
| 11614 | 1620: Bacon publishes 'Novum Organum' [PG] |
| 11619 | 1633: Galileo convicted of heresy by the Inquisition [PG] |
| 11623 | 1641: Descartes publishes his 'Meditations' [PG] |
| 11626 | 1650: death of Descartes, in Stockholm [PG] |
| 11627 | 1651: Hobbes publishes 'Leviathan' [PG] |
| 11633 | 1662: the Port Royal Logic is published [PG] |
| 11634 | 1665: Spinoza writes his 'Ethics' [PG] |
| 11643 | 1676: Leibniz settled as librarian to the Duke of Brunswick [PG] |
| 11649 | 1687: Newton publishes his 'Principia Mathematica' [PG] |
| 11652 | 1690: Locke publishes his 'Essay' [PG] |
| 11654 | 1697: Bayle publishes his 'Dictionary' [PG] |
| 11659 | 1713: Berkeley publishes his 'Three Dialogues' [PG] |
| 11666 | 1734: Voltaire publishes his 'Philosophical Letters' [PG] |
| 11667 | 1739: Hume publishes his 'Treatise' [PG] |
| 11675 | 1762: Rousseau publishes his 'Social Contract' [PG] |
| 11682 | 1781: Kant publishes his 'Critique of Pure Reason' [PG] |
| 11683 | 1785: Reid publishes his essays defending common sense [PG] |
| 11687 | 1798: the French Revolution [PG] |
| 11694 | 1807: Hegel publishes his 'Phenomenology of Spirit' [PG] |
| 11701 | 1818: Schopenhauer publishes his 'World as Will and Idea' [PG] |
| 11710 | 1840: Kierkegaard is writing extensively in Copenhagen [PG] |
| 11713 | 1843: Mill publishes his 'System of Logic' [PG] |
| 11715 | 1848: Marx and Engels publis the Communist Manifesto [PG] |
| 11717 | 1859: Darwin publishes his 'Origin of the Species' [PG] |
| 11721 | 1861: Mill publishes 'Utilitarianism' [PG] |
| 11724 | 1867: Marx begins publishing 'Das Kapital' [PG] |
| 11733 | 1879: Peirce taught for five years at Johns Hopkins University [PG] |
| 17907 | 1879: Frege invents predicate logic [PG] |
| 17909 | 1892: Frege's essay 'Sense and Reference' [PG] |
| 17908 | 1884: Frege publishes his 'Foundations of Arithmetic' [PG] |
| 11735 | 1885: Nietzsche completed 'Thus Spake Zarathustra' [PG] |
| 17911 | 1888: Dedekind publishes axioms for arithmetic [PG] |
| 11740 | 1890: James published 'Principles of Psychology' [PG] |
| 11742 | 1895 (roughly): Freud developed theories of the unconscious [PG] |
| 11745 | 1900: Husserl began developing Phenomenology [PG] |
| 11746 | 1903: Moore published 'Principia Ethica' [PG] |
| 11747 | 1904: Dewey became professor at Columbia University [PG] |
| 17910 | 1908: Zermelo publishes axioms for set theory [PG] |
| 11752 | 1910: Russell and Whitehead begin publishing 'Principia Mathematica' [PG] |
| 11756 | 1912: Russell meets Wittgenstein in Cambridge [PG] |
| 11762 | 1921: Wittgenstein's 'Tractatus' published [PG] |
| 11765 | 1927: Heidegger's 'Being and Time' published [PG] |
| 11768 | 1930: Frank Ramsey dies at 27 [PG] |
| 11770 | 1931: Gödel's Incompleteness Theorems [PG] |
| 11773 | 1933: Tarski's theory of truth [PG] |
| 11783 | 1942: Camus published 'The Myth of Sisyphus' [PG] |
| 11784 | 1943: Sartre's 'Being and Nothingness' [PG] |
| 11787 | 1945: Merleau-Ponty's 'Phenomenology of Perception' [PG] |
| 17918 | 1947: Carnap published 'Meaning and Necessity' [PG] |
| 11794 | 1950: Quine's essay 'Two Dogmas of Empiricism' [PG] |
| 17917 | 1953: Wittgenstein's 'Philosophical Investigations' [PG] |
| 17919 | 1956: Place proposed mind-brain identity [PG] |
| 11804 | 1962: Kuhn's 'Structure of Scientific Revolutions' [PG] |
| 17921 | 1967: Putnam proposed functionalism of the mind [PG] |
| 11808 | 1971: Rawls's 'A Theory of Justice' [PG] |
| 11810 | 1972: Kripke publishes 'Naming and Necessity' [PG] |
| 11813 | 1975: Singer publishes 'Animal Rights' [PG] |
| 17920 | 1975: Putnam published his Twin Earth example [PG] |
| 11820 | 1986: David Lewis publishes 'On the Plurality of Worlds' [PG] |
| 22317 | Truth does not admit of more and less [Frege] |
| 13455 | Frege did not think of himself as working with sets [Frege, by Hart,WD] |
| 16895 | The null set is indefensible, because it collects nothing [Frege, by Burge] |
| 3328 | Frege proposed a realist concept of a set, as the extension of a predicate or concept or function [Frege, by Benardete,JA] |
| 9179 | Frege frequently expressed a contempt for language [Frege, by Dummett] |
| 13473 | Frege thinks there is an independent logical order of the truths, which we must try to discover [Frege, by Hart,WD] |
| 6076 | For Frege, predicates are names of functions that map objects onto the True and False [Frege, by McGinn] |
| 3319 | Frege gives a functional account of predication so that we can dispense with predicates [Frege, by Benardete,JA] |
| 9871 | Frege always, and fatally, neglected the domain of quantification [Dummett on Frege] |
| 16884 | Basic truths of logic are not proved, but seen as true when they are understood [Frege, by Burge] |
| 3331 | If '5' is the set of all sets with five members, that may be circular, and you can know a priori if the set has content [Benardete,JA on Frege] |
| 16880 | Frege aimed to discover the logical foundations which justify arithmetical judgements [Frege, by Burge] |
| 8689 | Eventually Frege tried to found arithmetic in geometry instead of in logic [Frege, by Friend] |
| 5657 | Frege's logic showed that there is no concept of being [Frege, by Scruton] |
| 3318 | Frege made identity a logical notion, enshrined above all in the formula 'for all x, x=x' [Frege, by Benardete,JA] |
| 16885 | To understand a thought, understand its inferential connections to other thoughts [Frege, by Burge] |
| 16887 | Frege's concept of 'self-evident' makes no reference to minds [Frege, by Burge] |
| 16894 | An apriori truth is grounded in generality, which is universal quantification [Frege, by Burge] |
| 16882 | The building blocks contain the whole contents of a discipline [Frege] |
| 5816 | Frege said concepts were abstract entities, not mental entities [Frege, by Putnam] |
| 7307 | A thought is not psychological, but a condition of the world that makes a sentence true [Frege, by Miller,A] |
| 7309 | Frege's 'sense' is the strict and literal meaning, stripped of tone [Frege, by Miller,A] |
| 7312 | 'Sense' solves the problems of bearerless names, substitution in beliefs, and informativeness [Frege, by Miller,A] |
| 7725 | 'P or not-p' seems to be analytic, but does not fit Kant's account, lacking clear subject or predicate [Frege, by Weiner] |
| 7316 | Analytic truths are those that can be demonstrated using only logic and definitions [Frege, by Miller,A] |
| 7903 | The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna] |
| 3307 | Frege put forward an ontological argument for the existence of numbers [Frege, by Benardete,JA] |