We will be better men, braver and less idle, if we believe that one must search for the things one does not know, rather than if we believe that it is not possible to find out what we do not know and that we must not look for it.

He, O men, is the wisest, who, like Socrates, knows that his wisdom is in truth worth nothing.

Worthy of honor is he who does no injustice, and more than twofold honor, if he not only does no injustice himself, but hinders others from doing any.

No intelligent man will ever be so bold as to put into language those things which his reason has contemplated.

For the poet is a light winged and holy thing, and there is no invention in him until he has been inspired and is out of his senses and the mind is no longer with him. When he has not attained this state he is powerless and unable to utter his oracles.

The first step in learning is the destruction of human conceit.

He who advises a sick man, whose manner of life is prejudicial to health, is clearly bound first of all to change his patient's manner of life.