The eagle-headed men and the animals with human heads point to the descent of animals from man, and not the other way around. Metempsychosis and transmigration imply reincarnation of the spiritual soul from one human body to another.
Plato referred to Reincarnation and Karma in mythical terms. Divine Causality cannot be a personal, therefore a finite and conditioned godhead, any more with Plato than with the Vedantins, as he treats his subject teleologically.
Xenocrates was less reticent than Plato and Speusippus in his exposition of the soul. With him, Science was the object of noumenal thought — not the searches and researches in the phenomenal world. He referred to the World-Soul as the androgyne principle Father-Mother, the male element of which he designated as the last Zeus (Third Logos). To this World-Soul is entrusted dominion over all that which is subject to change and motion.