This is an aspect which was by no means unfamiliar to ancient man. It was naturally lost when the onlooker-consciousness awoke. In this respect it is of historical significance that the same man, G. A. Borelli (1608-79), a member of the Florentine Academy, who was the first to inquire into the movements of the animal and human body from a purely mechanical point of view, made the first attempt to deduce the planetary movements from a purely physical cause.³ Through this fact an impulse comes to expression which we may term Contra Animam, and against which we have to put our Pro Anima, in much the same way that we put our Pro Levitate against the Contra Levitatem call of the Florentine Academicians.