When men speak ill of thee, live so that nobody will believe them.

A State would be happy where philosophers were kings, or kings philosophers.

The orators and the despots have the least power in their cities ... since they do nothing that they wish to do, practically speaking, though they do whatever they think to be best.

No law or ordinance is mightier than understanding.

...that not life, but a good life, is to be chiefly valued.

He is unworthy of the name of man who is ignorant of the fact that the diagonal of a square is incommensurable with its side.

Nothing in human affairs is worth any great anxiety.