No one can teach, if by teaching we mean the transmission of knowledge, in any mechanical fashion, from one person to another. The most that can be done is that one person who is more knowledgeable than another can, by asking a series of questions, stimulate the other to think, and so cause him to learn for himself.

For this fear of death is indeed the pretense of wisdom, and not real wisdom, being the appearance of knowing the unknown; since no one knows whether death, which they in their fear apprehend to be the greatest evil, may not be the greatest good.

The unexamined life is not worth living.

The greatest flood has the soonest ebb; the sorest tempest the most sudden calm; the hottest love the coldest end; and from the deepest desire oftentimes ensues the deadliest hate.

The hour of departure has arrived and we go our ways; I to die, and you to live. Which is better? Only God knows.

Prefer knowledge to wealth, for the one is transitory, the other perpetual.

The reason why we have to acquire wealth is the body, because we are slaves in its service.