Then follows the famous myth, which is a sort of parable, and like other parables ought not to receive too minute an interpretation. In all such allegories there is a great deal which is merely ornamental, and the interpreter has to separate the important from the unimportant. Socrates himself has given the right clue when, in using his own discourse afterwards as the text for his examination of rhetoric, he characterizes it as a 'partly true and tolerably credible mythus,' in which amid poetical figures, order and arrangement were not forgotten. The soul is described in magnificent language as the self-moved and the source of motion in all other things. This is the philosophical theme or proem of the whole. But ideas must be given through something, and under the pretext that to realize the true nature of the soul would be not only tedious but impossible, we at once pass on to describe the souls of gods as well as men under the figure of two winged steeds and a charioteer. No connection is traced between the soul as the great motive power and the triple soul which is thus imaged. There is no difficulty in seeing that the charioteer represents the reason, or that the black horse is the symbol of the sensual or concupiscent element of human nature. The white horse also represents rational impulse, but the description, 'a lover of honour and modesty and temperance, and a follower of true glory,' though similar, does not at once recall the 'spirit' (thumos) of the Republic. The two steeds really correspond in a figure more nearly to the appetitive and moral or semi-rational soul of Aristotle. And thus, for the first time perhaps in the history of philosophy, we have represented to us the threefold division of psychology. The image of the charioteer and the steeds has been compared with a similar image which occurs in the verses of Parmenides; but it is important to remark that the horses of Parmenides have no allegorical meaning, and that the poet is only describing his own approach in a chariot to the regions of light and the house of the goddess of truth. The triple soul has had a previous existence, in which following in the train of some god, from whom she derived her character, she beheld partially and imperfectly the vision of absolute truth. All her after existence, passed in many forms of men and animals, is spent in regaining this. The stages of the conflict are many and various; and she is sorely let and hindered by the animal desires of the inferior or concupiscent steed. Again and again she beholds the flashing beauty of the beloved. But before that vision can be finally enjoyed the animal desires must be subjected.