During Dreyfus’ long tenure at Berkeley, he was an enormously influential and much-beloved teacher. His undergraduate classes were filled to overflowing, and even his graduate seminars were standing room only. Dreyfus’ teaching style was unique. Like Kierkegaard, a philosopher whom he revered, Dreyfus believed that teaching is learning. He refused to teach any text that he felt he already understood sufficiently well, and much of his time in the classroom involved not only getting the students to the edge of his understanding but, crucially, soliciting from them and discussing with them their suggestions for ways forward.