This disagreement between the sense of pleasure and the judgment of reason in the soul is, in my opinion, the worst ignorance; and also the greatest, because affecting the great mass of the human soul; for the principle which feels pleasure and pain in the individual is like the mass or populace in a state.

And when the soul is opposed to knowledge, or opinion, or reason, which are her natural lords, that I call folly, just as in the state, when the multitude refuses to obey their rulers and the laws; or, again, in the individual, when fair reasonings have their habitation in the soul and yet do no good, but rather the reverse of good.

All these cases I term the worst ignorance, whether in individuals or in states.

You will understand, Stranger, that I am speaking of something which is very different from the ignorance of handicraftsmen.
CLEINIAS: Yes, my friend, we understand and agree.
ATHENIAN: Let us, then, in the first place declare and affirm that the citizen who does not know these things ought never to have any kind of authority entrusted to him: he must be stigmatized as ignorant, even though he be versed in calculation and skilled in all sorts of accomplishments, and feats of mental dexterity; and the opposite are to be called wise, even although, in the words of the proverb, they know neither how to read nor how to swim; and to them, as to men of sense, authority is to be committed.

For, O my friends, how can there be the least shadow of wisdom when there is no harmony?
There is none; but the noblest and greatest of harmonies may be truly said to be the greatest wisdom; and of this he is a partaker who lives according to reason; whereas he who is devoid of reason is the destroyer of his house and the very opposite of a saviour of the state: he is utterly ignorant of political wisdom.