La etología de la comunicación en los seres vivos
This book explains in a variety of examples how humans evolved thanks to the fact that his whole perception system is filled with meaning. In constant comparison with animal behavior, Cyrulnik unleashes the process of "humanization" of the baby until the child speaking, which is a refinement of signals. Although the signs are always present in the world of the living, let alone a mechanism of utterance and immediate response. The human development is increasingly to distance objects, maintaining the relationship with them, first through the index finger that points, then through words, which only makes sense among social beings.