Abstract
In this article I reconsider the question of anthropological difference. I demonstrate that at least three motives prevent us from facing up to the originality of human behavior: science, morals, and also philosophy want us to believe that this question is a thing of the past. I come back to these three motives so as to criticize them and to reveal their flimsiness. And I try to show that one may advocate, in a naturalistic way and without metaphysics, the idea that there remains something that is “proper to humankind.”