Before we approach Plato’s ethical and religious views we must glance for a moment at his psychology, for on that depends in no small measure his moral system. In the fourth book of the Republic when discussing the different forms of government, Socrates is made to show that the soul has three parts or elements: the first is the divine or rational part (τὸ θεῖον, τὸ λογιστικόν) whose seat is in the head, the second, the courageous or passionate element (τὸ θυμοειδές) residing in the heart, and the third is the appetite (τὸ ἐπιθυμητικόν) which belongs to the diaphragm or liver.[196] In the Phaedrus[197] this same division is set forth in a myth. Now when in an individual all three parts are in accord under the leadership of reason, whose orders are enforced by courage on appetite, the man is virtuous; but if appetite and courage unite against reason, discord results and the man is vicious. As the state is well ordered when harmony exists among its parts, so harmony of the soul, led by the reason, produces the virtuous human being. In the earlier dialogues the soul is evidently regarded as a unit, so that the parts are really forms or manifestations of the soul; all three are immortal. But in the Timaeus only the reason is immortal, the other parts being separable and bound to the body with which they die.[198] Now we have already seen that the soul, or at least its rational part, being divine and immortal, has an affinity for the eternal ideas and is endowed by a natural love for the true, the beautiful, and the good. It is therefore impelled toward the divine world of ideas by a natural passion, and this effort on the part of man’s reason is philosophy. The true philosopher then is the lover of truth and reality, who is absorbed in the pleasures of the soul so that he will hardly be conscious of bodily pleasure; indeed he will not think much of human life or even fear death.[199] The soul, however, in its effort to mount into the realm of the ideas, is held back by the body in which it is imprisoned and fettered in the world of the senses. Thus we find in Plato the Orphic belief that man has a dual nature, made up of a divine soul and a mortal hindering body. We shall presently see how he gave to the emotional belief of that sect a philosophic basis and so transformed it into a reasonable article of morality and religion.