Frans de Waal is a world-renowned psychologist and primatologist. He is Professor of ethology of primates in the Department of Psychology at Emory University in Atlanta and director of the Living Links Center at the Yerkes National Primate Research Center. Famous for his research on chimpanzees and bonobos, which he studied social life for nearly forty years, Frans de Waal goes back in the evolution of our own behavior. 

Ranked among the 100 most influential people by Time magazine in 2007, Frans de Waal does not hesitate over his many books, to face the a priori dogmatic to impose its vision based on evolutionary biology and philosophy.