No trace of slavery ought to mix with the studies of the freeborn man. No study, pursued under compulsion, remains rooted in the memory.

The cause of all sins in every case lies in the person's excessive love of self.

The human race will have no respite from evils until those who are really philosophers acquire political power or until, through some divine dispensation, those who rule and have political authority in the cities become real philosophers.

Socrates said that, from above, the Earth looks like one of those twelve-patched leathern balls.

I know too well that these arguments from probabilities are imposters, and unless great caution is observed in the use of them, they are apt to be deceptive.

The wisdom of men is worth little or nothing.

The wisest have the most authority.