Jon Roffe shows how Empiricism and Subjectivity is the precursor for some of Deleuze s most well-known philosophical innovations. For those already familiar with Deleuze he emphasises its novelty within his corpus. And for all readers he shows how it outlines Deleuze s powerful and striking theory of subjectivity and of philosophy itself. Empiricism and Subjectivity is Gilles Deleuze s first book and yet it is infrequently read and poorly understood. In fact it constitutes a unique project in its own right deserving of the same close study that is now widely given to other more well-known works.