This book is a piece of philosophical work of extremely high intellectual quality. Its purpose is to defend in detail a ‘resolute’ reading of the Tractatus. It succeeds in this aim. It thus accomplishes something that has not yet been accomplished even by Conant or Diamond. It is therefore a major contribution to ‘Wittgenstein studies’, to contemporary philosophy and to the philosophical history of recent philosophy. (It has significant implications, for instance, for the work of Freudians, Sartreans, Griceans, Davidsonians.)