We must choose how to define the psychoanalytic field and its principal concepts, but what criteria should determine our choices? Laplanche’s thought falls within the rationalist tradition as can be seen in what Laplanche rightly considered his central The General Theory of Seduction and its links to the mode of action of psychoanalysis. The affiliation with rationalism constitutes one of the criteria that help establish this theory’s validity. That is the thesis of this book.