Plato: The Republic

3. BOOK III (continued)

Why, I said, you join physicians and judges. Now the most skilful physicians are those who, from their youth upwards, have combined with the knowledge of their art the greatest experience of disease; they had better not be robust in health, and should have had all manner of diseases in their own persons. For the body, as I conceive, is not the instrument with which they cure the body; in that case we could not allow them ever to be or to have been sickly; but they cure the body with the mind, and the mind which has become and is sick can cure nothing.

That is very true, he said.

But with the judge it is otherwise; since he governs mind by mind; he ought not therefore to have been trained among vicious minds, and to have associated with them from youth upwards, and to have gone through the whole calendar of crime, only in order that he may quickly infer the crimes of others as he might their bodily diseases from his own self-consciousness; the honourable mind which is to form a healthy judgment should have had no experience or contamination of evil habits when young. And this is the reason why in youth good men often appear to be simple, and are easily practised upon by the dishonest, because they have no examples of what evil is in their own souls.

Yes, he said, they are far too apt to be deceived.

Therefore, I said, the judge should not be young; he should have learned to know evil, not from his own soul, but from late and long observation of the nature of evil in others: knowledge should be his guide, not personal experience.

Yes, he said, that is the ideal of a judge.

Yes, I replied, and he will be a good man (which is my answer to your question); for he is good who has a good soul. But the cunning and suspicious nature of which we spoke,--he who has committed many crimes, and fancies himself to be a master in wickedness, when he is amongst his fellows, is wonderful in the precautions which he takes, because he judges of them by himself: but when he gets into the company of men of virtue, who have the experience of age, he appears to be a fool again, owing to his unseasonable suspicions; he cannot recognise an honest man, because he has no pattern of honesty in himself; at the same time, as the bad are more numerous than the good, and he meets with them oftener, he thinks himself, and is by others thought to be, rather wise than foolish.