[48] Therefore Chrysippus, the most celebrated philosopher of that sect, in his treatise about Increase, utters some such prodigious assertions as these, and after he has prefaced his doctrines with the assertion that it is impossible for two makers of a species to exist in the same substance, he proceeds, "Let it be granted for the sake of argument and speculation that there is one person entire and sound, and another wanting one foot from his birth, and that the sound man is called Dion and the cripple Theon, and afterwards that Dion also loses one of his feet, then if the question were asked which had been spoiled, it would be more natural to say this of Theon;" but this is the assertion of one who delights in paradox rather than in truth,