Let no one ignorant of Mathematics enter here.

Knowledge is true opinion.

... the community suffers nothing very terrible if its cobblers are bad and become degenerate and pretentious; but if the Guardians of its laws and constitution, who alone have the opportunity to bring it good government and prosperity, become a mere sham, then clearly it is completely ruined.

The contemplation of beauty causes the soul to grow wings.

But tell me, this physician of whom you were just speaking, is he a moneymaker, an earner of fees, or a healer of the sick?

Remember our words, then, and whatever is your aim let virtue be the condition of the attainment of your aim, and know that without this all possessions and pursuits are dishonourable and evil.

Then not only an old man, but also a drunkard, becomes a second time a child.