History 40 Description and travel 23 Political science 15 Philosophy 12 Travel 10 Criticism and interpretation 8 Spanish 8 more ... Christianity 6 Discovery and exploration 6 Indians of Mexico 6 Natural history 6 Spanish language 6 Conduct of life 5 History and criticism 5 Indians of South America 5 Military art and science 5 Spiritual life 5 Voyages and travels 5 Catholic Church 4 Criticism, Textual 4 Grammar 4 Law 4 Medicine 4 Mysticism 4 State, The 4 Utopias 4 Authorship 3 Biography 3 Christianity and other religions 3 Church and state 3 less ...