Gilbert Ryle was one of the most famous philosophers last century. His work The Concept of Mind started a revolution within Analytic Philosophy of Mind. Ryle's revolutionary insight was to reconstruct the mind from the ordinary language of everyday people. Yet few people know that Ryle was himself deeply influenced by Jean-Paul Sartre. This work plumbs those depths beginning with an interview Ryle gave shortly before he died and a confession that he used Sartre's argument on Hume in his work. The book is the perfect introduction for the budding Philosopher, Psychologist or Psychiatrist interested in Ryle's work, while offering new surprises for the dedicated Analytic Philosopher or Rylean scholar.