One man cannot practice many arts with success.

A written discourse on any subject is bound to contain much that is fanciful.

The fear of death is indeed the pretence of wisdom, and not real wisdom, being the appearance of knowing the unknown.

Those who are not schooled and practised in truth [who are not honest and upright men] can never manage aright the government, nor yet can those who spend their lives as closet philosophers; because the former have no high purpose to guide their actions, while the latter keep aloof from public life.

We must, if we are to be consistent, and if we re to have a real pedigree herd, mate the best of our men with the best of our women as often as possible, and the inferior men with the inferior women as seldom as possible, and keep only the offspring of the best.

Train children not by compulsion but as if they were playing.

How can you prove whether at this moment we are sleeping, and all our thoughts are a dream; or whether we are awake, and talking to one another in the waking state?