This book draws upon the phenomenological tradition of Husserl and Heidegger inorder to provide an alternative elaboration of John McDowell’s thesis that in order to understand how self-conscious subjectivity relates to the world, perception must be understood as a genuine unity of spontaneity ("concept”) and receptivity ("intuition”).The book is written in terms accessible to analytic philosophers and will thus enable them to see the central differences between analytic and phenomenological approaches to intentionality and self-consciousness.