Better a good enemy than a bad friend.
Pleasure is the greatest incentive to evil.
No soul willfully does wrong.
Wisest is he who knows what he does not know.
I know not how I may seem to others, but to myself I am but a small child wandering upon the vast shores of knowledge, every now and then finding a small bright pebble to content myself with.
The beginning is half of the whole.
Perfect wisdom has four parts: Wisdom, the principle of doing things aright. Justice, the principle of doing things equally in public and private. Fortitude, the principle of not fleeing danger, but meeting it. Temperance, the principle of subduing desires and living moderately.
If one has made a mistake, and fails to correct it, one has made a greater mistake.
A wise man speaks because he has something to say; a fool because he has to say something.