Lies are the greatest murder. They kill the Truth.

Do not go through life like leaf blown from here to there believing whatever you are told.

This is...self-knowled ge-for a man to know what he knows, and what he does not know.

To know, is to know that you know nothing. That is the meaning of true knowledge. For a man who claims to have knowledge, while actually knowing nothing, is less smarter than you, who claim to know nothing.

There are a great many of these accusers, and they have been accusing me now for a great many years, and what is more, they approached you at the most impressionable age, when some of you were children or adolescents; and literally won their case by default, because there was no one to defend me.

False language, evil in itself, infects the soul with evil.

Admitting one's ignorance is the first step in acquiring knowledge.