Reading Bohr: Physics and Philosophy This book offers a new perspective on Niels Bohrs interpretation of quantum mechanics as complementarity and on the relationships between physics and philosophy in Bohrs work. The importance of quantum field theory for Bohrs thinking has not been adequately addressed in the literature on Bohr. This book provides clarification of Bohrs writings (which usually pose problems of reading) and an analysis of the role of quantum field theory in Bohrs thinking. Reading Bohr: Physics and Philosophy offers a new perspective on Niels Bohrs interpretation of quantum mechanics as complementarity and on the relationships between physics and philosophy in Bohrs work which has had momentous significance for our understanding of quantum theory and of the nature of knowledge in general. Philosophically the book reassesses Bohrs place in the Western philosophical tradition from Kant and Hegel on. Physically it reconsiders the main issues at stake in the Bohr Einstein confrontation and in the ongoing debates concerning quantum physics. It also devotes greater attention than in most commentaries on Bohr to the key developments and transformations of his thinking concerning complementarity. Most significant among them were those that occurred first under the impact of Bohrs exchanges with Einstein and second under the impact of developments in quantum theory itself both quantum mechanics and quantum field theory. The importance of quantum field theory for Bohrs thinking has not been adequately addressed in the literature on Bohr to the considerable detriment to our understanding of the history of quantum physics. Filling this lacuna is one of the main contributions of the book which also enables us to show why quantum field theory compels us to move beyond Bohr without however simply leaving him behind.