What is it to love? Can one explain the love of Romeo for Juliet? What are desire, pleasure and pain, the taste for power and domination? Moving beyond the traditional split between body and mind, Jean-Didier Vincent proposes a new theory of emotions which brings harmony to our concept of mankind. Jean-Didier Vincent is a neurobiologist and director of the Alfred Fessard Institute of CNRS at Gif-sur-Yvette.