Humanities
Philosophy
The discipline of asking what a question actually means before answering it.
15 fields · 146 topics · 20 curated works
Fields within Philosophy
Logic
9The formal structure of valid inference.
Deductive Reasoning · Inductive Reasoning · Propositional Logic · Predicate Logic · Modal Logic
Epistemology
10What knowledge is and whether we have any.
Theories of Justification · The Gettier Problem · Scepticism · Foundationalism & Coherentism · Reliabilism
Metaphysics
10What exists, and in what sense.
Ontology · Universals & Particulars · Causation · Time · Identity & Persistence
Ethics & Moral Philosophy
11How one ought to act, and what could make that true.
Consequentialism · Utilitarianism · Deontology · Virtue Ethics · Moral Realism & Anti-Realism
Applied Ethics
10Moral philosophy where the stakes are concrete.
Bioethics · Animal Ethics · Environmental Ethics · Business Ethics (Philosophical) · Ethics of Technology
Social & Political Philosophy
10The normative foundations of collective life.
Theories of Justice · Rawls & the Original Position · Libertarian Political Philosophy · Marxist Philosophy · Rights Theory
Philosophy of Mind
10The relationship between mental and physical.
The Mind-Body Problem · Dualism · Physicalism · Functionalism · Consciousness & Qualia
Philosophy of Science
11What makes a claim scientific, and what science tells us about reality.
Demarcation Problem · Falsificationism · Paradigms & Scientific Revolutions · Underdetermination · Scientific Realism
Philosophy of Language
8Meaning, reference and what words do.
Theories of Meaning · Reference & Descriptions · Speech Act Theory · Semantics vs Pragmatics · Vagueness
Aesthetics
9Art, beauty and judgement.
Theories of Art · Beauty & Taste · Aesthetic Judgement · Expression & Emotion in Art · Interpretation & Intention
Ancient Philosophy
9The Greek and Roman foundations.
Presocratics · Socrates · Plato · Aristotle · Stoicism
Medieval & Early Modern Philosophy
11Scholasticism through the rationalist-empiricist divide.
Augustine · Aquinas & Scholasticism · Islamic Philosophy · Jewish Medieval Philosophy · Descartes
Nineteenth & Twentieth Century Philosophy
12The modern schools and their quarrel.
Hegel · Schopenhauer · Kierkegaard · Nietzsche · Pragmatism
Eastern & Comparative Philosophy
8Traditions with different starting assumptions.
Confucianism · Daoism · Buddhist Philosophy · Hindu Philosophy & Vedanta · Zen
Practical Philosophy
8Philosophy meant to be used rather than only discussed.
Stoic Practice · The Examined Life · Meaning & Absurdity · Death & Mortality · Happiness & the Good Life
Reading in Philosophy
20Start here
No prior grounding assumed.
- BookTao Te ChingLaozi, 400 BCE
Eighty-one short chapters arguing that yielding outlasts force and that the most effective action often looks like restraint.
- BookMeditationsMarcus Aurelius, 180
Private notes on Stoic practice, written by an emperor to himself and never intended to be read by anyone.
- BookLetters from a StoicSeneca, 65
Practical Stoicism delivered as correspondence — on time, wealth, fear and the shortness of a life spent badly.
Then
Assumes you know the vocabulary.
- BookMeditations on First PhilosophyRené Descartes, 1641
Doubts everything doubtable to find one certainty, and hands modern philosophy both its starting point and its mind-body problem.
- EssayThe Myth of SisyphusAlbert Camus, 1942
Opens with suicide as the only serious philosophical problem and answers it by accepting the absurd without appeal.
- BookThe Structure of Scientific RevolutionsThomas Kuhn, 1962
Science advances by paradigm shifts rather than accumulation, and competing paradigms are not fully commensurable.
- PaperWhat Is It Like to Be a Bat?Thomas Nagel, 1974· 16 pages
Subjective character of experience resists any objective physical account, which is the sharpest form of the mind-body problem.
- BookAnimal LiberationPeter Singer, 1975
If suffering counts morally, it counts regardless of species — the argument that created the modern animal ethics debate.
Go deeper
Primary sources and full treatments.
- BookNicomachean EthicsAristotle, 340 BCE
The good life is activity in accordance with virtue, and virtue is a disposition trained by habit rather than taught by rule.
- BookLeviathanThomas Hobbes, 1651
Without a common power life is a war of all against all, so subjects rationally trade liberty for security — the founding social contract argument.
- BookGroundwork of the Metaphysics of MoralsImmanuel Kant, 1785
Grounds morality in what any rational agent must will universally, and rules out treating a person merely as a means.
- BookBeyond Good and EvilFriedrich Nietzsche, 1886
Attacks the assumption that moral categories are given rather than made, and asks whose interests each morality has served.
- BookThe Logic of Scientific DiscoveryKarl Popper, 1934
Theories are scientific only if they forbid something; confirmation is cheap and falsifiability is the real criterion.
- BookArt as ExperienceJohn Dewey, 1934
Locates art in the experience of encountering it rather than in the object, which puts the museum and the well-made chair on the same footing.
- BookPhilosophical InvestigationsLudwig Wittgenstein, 1953
Meaning is use, not reference; most philosophical problems are grammatical confusions dressed as deep questions.
- BookGödel, Escher, BachDouglas Hofstadter, 1979
Follows self-reference through logic, art and music to argue that meaning and mind emerge from formal systems looping back on themselves.
- BookNaming and NecessitySaul Kripke, 1980
Names refer by causal chain rather than description, which makes some truths necessary but discoverable only by experiment.
- BookThe RepublicPlato, 375 BCE
Builds an ideal city to answer what justice is in a person, and produces the cave allegory along the way.
- BookAn Enquiry Concerning Human UnderstandingDavid Hume, 1748
Causation is a habit of expectation rather than an observed necessity, and induction has no non-circular justification.
- BookThe Emperor's New MindRoger Penrose, 1989
Argues from Gödel that human understanding is not algorithmic, and that minds must therefore exploit physics computers do not.