Every one knows that among our own ancestors, and the Druids or high-priests of the Gauls, the metempsychosis was held almost in the same sense as among the Egyptians and the Greeks. It is, so to speak, a national faith to us, for it has been held in honour, its dogmas have flourished, in the same countries in which we now dwell. We have recalled these facts, and collected these passages from ancient writers, only in order to define the manner in which the Egyptians, as well as the Greeks, and, in later times, the Gauls, understood the metempsychosis. Our system differs from the old oriental conception, which was embraced by the Egyptians, the Greeks, and the Druids, in our denial that the human soul can ever return to the body of an animal. We believe that the human soul has already passed through this probation, and that it never can be renewed. In nature, in fact, the animal has a part inferior to that of man; it is below our species in its degree of intelligence, and it cannot have either merit or demerit. Its faculties do not invest it with the entire responsibility of its actions. It is but an intermediate link between the plant and man; it has certain faculties, but we cannot pretend that those faculties assimilate it to moral man. Thus, we reject this doctrine of the return of the human soul to conditions through which it has already passed. Retrogression has no place in our system. The soul, in its progressive march, may pause for an instant, but it never turns back. We admit that man is condemned to re-commence an ill-fulfilled existence, but this new experience is made in a human body, in a new covering of the same living type, and not in the form of an inferior being. The oriental dogma of the metempsychosis misapprehended the great law of progress, which is, on the contrary, the foundation of our doctrine. Fourth objection. It will be said to us: You maintain that our souls have already existed in the bodies of animals; do you, then, share the belief of those naturalists who derive man from the monkey?