(3) Plato’s theory of punishment is partly vindictive, partly corrective. In the Gorgias, as well as in the Phaedo and Republic, a few great criminals, chiefly tyrants, are reserved as examples. But most men have never had the opportunity of attaining this pre-eminence of evil. They are not incurable, and their punishment is intended for their improvement. They are to suffer because they have sinned; like sick men, they must go to the physician and be healed. On this representation of Plato’s the criticism has been made, that the analogy of disease and injustice is partial only, and that suffering, instead of improving men, may have just the opposite effect. Like the general analogy of the arts and the virtues, the analogy of disease and injustice, or of medicine and justice, is certainly imperfect. But ideas must be given through something; the nature of the mind which is unseen can only be represented under figures derived from visible objects. If these figures are suggestive of some new aspect under which the mind may be considered, we cannot find fault with them for not exactly coinciding with the ideas represented. They partake of the imperfect nature of language, and must not be construed in too strict a manner. That Plato sometimes reasons from them as if they were not figures but realities, is due to the defective logical analysis of his age. Nor does he distinguish between the suffering which improves and the suffering which only punishes and deters. He applies to the sphere of ethics a conception of punishment which is really derived from criminal law. He does not see that such punishment is only negative, and supplies no principle of moral growth or development. He is not far off the higher notion of an education of man to be begun in this world, and to be continued in other stages of existence, which is further developed in the Republic. And Christian thinkers, who have ventured out of the beaten track in their meditations on the “last things,” have found a ray of light in his writings. But he has not explained how or in what way punishment is to contribute to the improvement of mankind. He has not followed out the principle which he affirms in the Republic, that “God is the author of evil only with a view to good,” and that “they were the better for being punished.” Still his doctrine of a future state of rewards and punishments may be compared favourably with that perversion of Christian doctrine which makes the everlasting punishment of human beings depend on a brief moment of time, or even on the accident of an accident. And he has escaped the difficulty which has often beset divines, respecting the future destiny of the meaner sort of men (Thersites and the like), who are neither very good nor very bad, by not counting them worthy of eternal damnation.