Abstract

The Swiss psychologist Jean Piaget devoted his life to following, step by step and lovingly, the development in children of the art of reasoning. In the course of the successive stages of this development, the child's view of the world changes in nature. Similarly, from its earliest infancy, medicine has viewed living things in successively different manners. For medicine, it is true, the stages overlap; one may still be using an ancient discourse from which another has daringly freed itself. Nevertheless, for the sake of clarity in this analysis, I will try to define successive epistemological attitudes as if they had represented a regular progression of medical thinking.