The object of my researches is the brain. The cranium is only a faithful cast of the external surface of the brain, and is consequently but a minor part of the principal object.

Now I have demonstrated, that the convolutions of the brain are nothing but the peripheric expansion of the bundles of which it is composed consequently the convolutions of the brain must be recognized as the parts in which the instincts, sentiments, propensities are exercised and, in general the moral and intellectual forces.

The fate of the physiology of the brain is independent of the truth and falsity of my assertions relative to the laws of the organization of the nervous system, in general, and of the brain in particular, just as the knowledge of the functions of a sense is independent of the knowledge of the structure of its apparatus.