| Adler, M. J. |
The Conditions of Philosophy. 1965 |
| Aquinas, Thomas |
Summa Theologica. c. 1265-1274 |
| Aristotle |
Nicomachean Ethics. 4th Cent. B.C. |
| Austin, J. L. |
Sense and Sensabilia. 1964 |
| Ayer, A. J. |
Language, Truth and Logic. 1936 |
| Berkeley, George |
Treatise Concerning the Principles of Human Knowledge. 1710 |
| Chomsky, Noam |
Language and Mind. 1968 |
| Descartes, Rene |
Meditations on First Philosophy. 1641 |
| Dewey, John |
Experience and Education. 1938 |
| Frege, Gottlob |
Logical Investigations. 1977 |
| Gilson, Etienne |
The Christian Philosophy of Saint Thomas Aquinas. 1924 |
| Hegel, Georg Wilhelm F. |
The Phenomenology of Mind. 1807 |
| Heidegger, Martin |
Being and Time. 1927 |
| Hobbes, Thomas |
Leviathan. 1651 |
| Hume, David |
An Inquiry Concerning Human Understanding. 1748 |
| Husserl, Edmund |
The Paris Lectures. 1950 |
| James, William |
Pragmatism. 1907 |
| Jaspers, Karl |
Philosophy of Existence. 1937 |
| Kant, Immanuel |
Prologomena to Any Future Metaphysics. 1783 |
| Kierkegaard, Soren |
The Concept of Dread. 1844 |
| Kirk, G.S., J. E. Raven |
The Pre-Sccratic Philosophers. 1957 |
| Leibniz, Gottfried Wilhelm von |
The Monadology. 1714 |
| Locke, John |
An Essay Concerning Human Understanding. 1690 |
| Marcel, Gabriel |
Philosophy of Existence. 1949 |
| Merleau-Ponty, Maurice |
The Phenemenology of Perception. |
| Mill, John Stuart |
Utilitarianism. 1861 |
| Montaigne, Michel de |
Essays. 1580 |
| Moore, G. E. |
Principia Ethica. 1903 |
| Nietzsche, Friedrich |
Beyond Good and Evil. 1886 |
| Ortega y Gasset, Jose |
The Revolt of the Masses. 1929 |
| Passmore, John |
A Hundred Years of Philosophy. 1957 |
| Plato |
Phaedo. 4th Cent. B.C. |
| Popper, Karl |
Conjectures and Refutations. 1963 |
| Quine, Willard van Orman |
From a Logical Point of View. 1953 |
| Russell, Bertrand |
The Problems of Philosophy. 1912 |
| Ryle, Gilbert |
The Concept of Mind. 1949 |
| Sartre, Jean-Paul |
Being and Nothingness. 1943 |
| Schopenhauer, Arthur |
The World as Will and Idea. 1819 |
| Sextus Empiricus |
Outlines of Pyrrhonism. c. 200 |
| Spinoza, Benedict |
Ethics. 1677 |
| Wittgenstein, Ludwig |
Philosophical Investigations. 1953 |