Only those means of security are good, are certain, are lasting, that depend on yourself and your own vigor.

Because there are three classes of intellects: one which comprehends by itself; another which appreciates what others comprehend; and a third which neither comprehends by itself nor by the showing of others; the first is the most excellent, the second is good, the third is useless.

Wisdom consists in being able to distinguish among dangers and make a choice of the least harmful.

If the course of human affairs be considered, it will be seen that many things arise against which heaven does not allow us to guard.

Everyone sees what you appear to be, few experience what you really are.

I'm not interested in preserving the status quo; I want to overthrow it.

Few men are brave by nature, but good discipline and experience make many so.