What does it mean to "live without why"? This was the advice of Meister Eckhart (ca. 1260-1328), both in his Latin treatises to philosophers and theologians and in his German sermons to nuns and ordinary lay persons. He seems to have meant that we should live and act out of justice or goodness and not in order to gain some reward for our deeds. This message was received with indignation by the Church hierarchy and was condemned by the Pope in 1329. How did Eckhart come to formulate it? And why was it so controversial?

John M. Connolly addresses these questions by locating Eckhart's...