General Book 60 Knowledge Western 60 Literature collections 55 Philosophy 17 English literature 9 Classics 8 Greek literature 7 Novel 7 Christianity 6 English 5 History 5 Poetry 5 Translation English 5 Economics 4 Physics 4 Rome 4 Theology 4 Biography 3 Drama 3 Mathematics 3 Philosophers 3 Ancient 2 Aristophanes 2 Aristotle 2 Astronomy 2 Books and reading 2 Capital 2 Communism 2 Dramatic works 2 Education 2