1. Aleni, Giulio (1966). Recording of the Discussion on Learning in Fuzhou (三山论学纪 Sanshan lunxueji), Students’ Bookstore (Xuesheng shuju).
2. Aquinas, St. Thomas (1924). Summation Against the Unbelievers, Benziger Brothers Publishing Co.
3. Regan, Richard (2003). On Evil, Oxford University Press.
4. Augustine (1961). Confessions, Penguin Books.
5. Augustine (2003). City of God, Penguin Books.