The Subject in Question a fascinating insight into the difference between two of the twentieth century's most famous philosopher over the key notions of conscious experience and the self. Jean-Paul Sartre's The Transcendence of the Ego, published in 1937, is a major text in the phenomenological tradition and sets the course for much of Sartre's later thought. The subject in Question is the first full-length study of this famous work and its influence on twentieth-century philosophy. It also investigates the relationship between Sartre's ideas and the earlier work of Descartes and Kant.