Obscurity is dispelled by augmenting the light of discernment, not by attacking the darkness.

The Delphic Oracle said I was the wisest of all the Greeks. It is because that I alone, of all the Greeks, know that I know nothing.

Envy is the ulcer of the soul.

The only place where success comes before work is in the dictionary.There is only one good, knowledge, and one evil, ignorance.

If you would seek health, look first to the spine.

One who is injured ought not to return the injury, for on no account can it be right to do an injustice.

If I can assign names as well as pictures to objects, the right assignment of them we may call truth, and the wrong assignment of them falsehood.