Richard Rufus of Cornwall was an early Scholastic philosopher-theologian who taught at the Universities of Paris and Oxford between 1231 and 1255. In those years he played a vital part in the transformation of philosophy and theology in early thirteenth-century Western Europe. He pioneered the teaching of metaphysics, physics, chemistry, psychology, and ethics. At Paris Rufus gave the earliest lectures on Aristotelian physics and metaphysics of which a record survives. Although acknowledged as a great scholar in his lifetime, his devotion to the Franciscan ideal of humility led him...