The arrival of neurons and their unique ability to transmit and receive messages was the radical break in the course of the human brain’s evolution. This led to the development of the self. Neurons organize themselves in complex circuits and networks. Networks that serve to represent events occurring in the body, influence the function of other cells, even their own function. In this framework, the distinction between body and brain is blurred―the neurons that make up the brain and eventually generate the mind are body cells and are perpetually connected to the body.