But as for beasts, I do not consider that they can pronounce any judgment at all. For although they are not depraved, it is still possible for them to be wrong. Just as one stick may be bent and crooked by having been made so on purpose, and another may be so naturally; so the nature of beasts is not indeed depraved by evil education, but is wrong naturally. Nor is it correct to say that nature excites the infant to desire pleasure, but only to love itself and to desire to preserve itself safe and unhurt. For every animal the moment that it is born loves itself, and every part of itself, and above all does it love its two principal parts, namely its mind and body, and afterwards it proceeds to love the separateparts of each. For there are in the mind and also in the body some parts of especial consequence; and as soon as it has got a slight perception of this fact, it then begins to make distinctions, so as to desire those things which are by nature given to it as its principal goods, and to reject the contrary. Now it is a great question whether among these primary natural goods, pleasure has any place or not. But to think that there is nothing beyond pleasure, no limbs, no sensations, no emotions of the mind, no integrity of the body, no health, appears to me to be a token of the greatest ignorance. And on this the whole question of good and evil turns. Now Polemo and also Aristotle thought those things which I mentioned just now the greatest of goods. And from this originated that opinion of the Old Academy and of the Peripatetic School, which led them to say that the greatest good was to live in accordance with nature—that is to say, to enjoy the chief good things which are given by nature, with the accompaniment of virtue. Callipho added nothing to virtue except pleasure; Diodorus nothing except freedom from pain. And all these men attach the idea of the greatest good to some one of these things which I have mentioned. Aristippus thought it was simple pleasure. The Stoics defined it to be agreeing with nature, which they say can only be living virtuously, living honourably. And they interpret it further thus—to live with an understanding of those things which happen naturally, selecting those which are in accordance with nature, and rejecting the contrary. So there are three definitions, all of which exclude honesty:—one, that of Aristippus or Epicurus; the second, that of Hieronymus; the third, that of Carneades: three in which honesty is admitted with some qualifying additions; those, namely, of Polemo, Callipho, and Diodorus: one single one, of which Zeno is the author, which is wholly referred to what is becoming; that is to say, to honesty. For Pyrrho, Aristo, and Herillus, have long since sunk into oblivion. The rest have been consistent with themselves, so as to make their ends agree with their beginnings; so that Aristippus has defined it to be pleasure; Hieronymus, freedom from pain; and Carneades, the enjoyment of what are pointed out by nature as the principal goods.