- Catherine, of Alexandria, Saint1
- Catherine, of Siena, Saint, 1347-13801
- Christian ethics1
- Christian literature, Arabic1
- Christian poetry, English (Middle)1
- Christian saints1
- Christian saints--Biography1
- Christian saints--Prayers and devotions1
- Christians--Conduct of life1
- Conduct of life1
- Confession--Catholic Church1
- Criticism and interpretation1
- De anima (Aristotle)1
- Devotional exercises1
- Devotional literature, German1
- Dialectic1
- Didactic literature, English (Middle)1
- Didactic poetry, English (Middle)1
- Divorce (Islamic law)1
- Eighteenth century1