The physician himself (this is a delicate and subtle observation) should not be a man in robust health; he should have, in modern phraseology, a nervous temperament; he should have experience of disease in his own person, in order that his powers of observation may be quickened in the case of others.
The perplexity of medicine is paralleled by the perplexity of law; in which, again, Plato would have men follow the golden rule of simplicity.
Greater matters are to be determined by the legislator or by the oracle of Delphi, lesser matters are to be left to the temporary regulation of the citizens themselves.

Plato is aware that laissez faire is an important element of government.

The diseases of a State are like the heads of a hydra; they multiply when they are cut off.

The true remedy for them is not extirpation but prevention.

And the way to prevent them is to take care of education, and education will take care of all the rest.