List below and survey here. The queston asked is how many of these have you read. And the whole of these books, not some, not an abbreviated form. I’m claiming 18 of these, and bits, sometimes substantial, of others. Never read any Sidgwick, Moore, or Wittgenstein. I’ve not read much of the British empiricists, bar their political works. Has anyone, except the most ardent Thomist, actually read all of the Summa theologiae? Compared to that almost everything else on here is a mere pamphlet.
- The Republic, Plato
- Organon, Aristotle
- Nicomachean Ethics, Aristotle
- City of God, Augustine
- Summa theologiae, Aquinas
- The Prince, Machiavelli
- Novum Organum, Francis Bacon
- Discourse on Method, Rene Descartes
- Meditations on First Philosophy, Rene Descartes
- Leviathan, Thomas Hobbes
- Ethics, Spinoza
- An Essay Concerning Human Understanding, John Locke
- Monadology, Leibniz
- Principles of Human Knowledge, Berkeley
- A Treatise of Human Nature, Hume
- Dialogues Concerning Natural Religion, Hume
- The Social Contract, Rousseau
- The Principles of Morals and Legislation, Jeremy Bentham
- Critique of Pure Reason, Immanuel Kant
- Phenomenology of Spirit, Hegel
- Utilitarianism, John Stuart Mill
- Vindication of the rights of Women, Mary Wollstonecraft
- Either/Or, Soren Kierkegaard
- Method of Ethics, Sidgwick
- Thus Spoke Zarathustra, Nietzsche
- Communist Manifesto, Karl Marx
- Principia Ethica, G. E. Moore
- Being and Time, Martin Heidegger
- Tractatus, Wittgenstein
- Philosophical Investigations, Wittgenstein
- Being and Nothingness, Jean-Paul Sartre
- The Second Sex, de Beauvoir
Progressive Geographies 
I found Thus Spoke Zarathustra to be an odd choice for the one representative text by Nietzsche. I’d recommend Fear and Trembling as the representative Kierkegaard text, although Either/Or is a more defensible pick for Kierkegaard than TSZ is for Nietzsche.
Yeah I don’t get that either, regarding Nietzsche. The Gay Science or Genealogy of Morals would make more sense to me. I also don’t see why they put Communist Manifesto for Marx. I would have put Das Kapital myself.
Wittgenstein himself said the Tractatus was a waste of time
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I’ve read parts of some of these texts by Beauvoir, Heidegger, Sartre, Kant or Spinoza (either for school or for pleasure) and only completely read 2 or 3 – Machiavelli, Nietzsche and perhaps Rousseau.