Philosophers 23 Philosophy, Ancient 5 Philosophers, Ancient 4 Communism 3 Leibniz, Gottfried Wilhelm, 3 Marx, Karl, 3 Philosophy, Modern 3 Political science 3 Socrates 3 Aristotle 2 Augustine, 2 Berkeley, George, 2 Confucius 2 Derrida, Jacques 2 Descartes, René, 2 Foucault, Michel, 2 Hegel, Georg Wilhelm Friedrich, 2 Heidegger, Martin, 1889-1976 2 Hume, David, 2 Kant, Immanuel, 2 Kierkegaard, Søren, 2 Locke, John, 2 Machiavelli, Niccolò, 2 Nietzsche, Friedrich Wilhelm, 2 Phenomenology 2 Plato 2 Russell, Bertrand, 2 Sartre, Jean-Paul, 2 Schopenhauer, Arthur, 2 Spinoza, Benedictus de, 2