 He lectured on Shakespeare both there and at Columbia before becoming a professor at Harvard University, where he taught for many years.He was the General Editor of the Pelican Books edition of the works of Shakespeare.He also wrote a number of well-received books on Shakespeare's works, among them "Shakespeare's Audience" (1941), "As They Liked It" (1947), "Shakespeare and the Rival Traditions" (1952), and "Shakespeare Without Words" (1966).