Aquinas (1224–1274) wrote prodigiously throughout his life, and his works include commentaries on the writings of Aristotle, reports on Albertus Magnus’ (1200–1280) lectures, a commentary on the Sentences of Peter Lombard (c. 1095–1160), and other philosophical treatises such as On Being and Essence and On the Principles of Nature, as well as On the Unity of the Intellect against the Averroists. He is most famous for his Summa against the Gentiles and Summa on Theology.