As in several other Dialogues, there is more of system in the Phaedo than appears at first sight. The succession of arguments is based on previous philosophies; beginning with the mysteries and the Heracleitean alternation of opposites, and proceeding to the Pythagorean harmony and transmigration; making a step by the aid of Platonic reminiscence, and a further step by the help of the nous of Anaxagoras; until at last we rest in the conviction that the soul is inseparable from the ideas, and belongs to the world of the invisible and unknown. Then, as in the Gorgias or Republic, the curtain falls, and the veil of mythology descends upon the argument. After the confession of Socrates that he is an interested party, and the acknowledgment that no man of sense will think the details of his narrative true, but that something of the kind is true, we return from speculation to practice. He is himself more confident of immortality than he is of his own arguments; and the confidence which he expresses is less strong than that which his cheerfulness and composure in death inspire in us.
Difficulties of two kinds occur in the Phaedo—one kind to be explained out of contemporary philosophy, the other not admitting of an entire solution. (1) The difficulty which Socrates says that he experienced in explaining generation and corruption; the assumption of hypotheses which proceed