D.W. Winnicott - one of this centuries most important theorists - is the focus of the new edition of this extraordinary volume. Drawing extensively upon Winnicott's own papers and lectures, the main themes of his theory and personal development are revealed. His vast contributions to the understandings of the profound significance of infancy in the total life of human beings is brought to the foreground. And throughout, D.W. Winnicott - noted pediatrician and child analyst, revered teacher and theorist - shines through. Part I, The Background, discusses Winnicott's personal beliefs, and the evolution of his theory of emotional development. In Part II, The Theory of Emotional Development, his main themes are introduced: Basic Assumptions, Early Psychic Functioning, Adapting to Shared Reality, and The Environmental Provision. Part III, Boundary and Space, considers some of the implications of Winnicott's theory of the development for the individual, and for society. Boundary and Space provides for the first systemic presentation of D. W. Winnicott's developmental and clinical methodology.