3. Those who stand by the former doctrine, and assert that the state of souls is prior to their life in the flesh, do not seem to me to be clear from the fabulous doctrines of the heathen which they hold on the subject of successive incorporation: for if one should search carefully, he will find that their doctrine is of necessity brought down to this. They tell us that one of their sages said that he, being one and the same person, was born a man, and afterwards assumed the form of a woman, and flew about with the birds, and grew as a bush, and obtained the life of an aquatic creature;—and he who said these things of himself did not, so far as I can judge, go far from the truth: for such doctrines as this of saying that one soul passed through so many changes are really fitting for the chatter of frogs or jackdaws, or the stupidity of fishes, or the insensibility of trees.