Theology History 216 Study and teaching 112 Collected works 100 Doctrines 100 Early works to 1800 74 Catholic Church 58 more ... Catholic authors 57 Devotion to 45 Theology, Doctrinal 43 Christian literature, Early 41 Christian ethics 32 Christianity 32 Spiritual life 29 History of doctrines 27 Religion 21 Philosophy 19 Religious aspects 19 Canon law 18 God 18 Liturgy 18 Biblical teaching 17 Church 17 Clergy 17 Criticism, interpretation, etc 16 Periodicals 15 Church history 14 Dictionaries 13 Methodology 13 Theologians 13 Theological seminaries 13 Apologetics 12 Controversial literature 12 Training of 12 Christian life 11 less ...