Naturalism 26 Philosophy 21 Realism 11 Idealism 6 Naturalism in literature 6 Education 5 Ethics 5 History and criticism 5 Pragmatism 5 American literature 4 Culture 4 Realism in literature 4 Consciousness 3 Democracy 3 Knowledge, Theory of 3 Natural law 3 Science 3 Social Sciences 3 Theater 3 Actors 2 American fiction 2 Criticism and interpretation 2 Dialectic 2 English literature 2 Environmental ethics 2 History 2 Liberalism 2 Literary criticism-- Philosophy & theory of literature 2 Literature 2 Materialism 2