A person who is good for anything ought not to calculate the chance of living or dying; he or she ought only to consider whether in doing anything he or she is doing right or wrong- acting the part of a good person or a bad person.

A sensible man will remember that the eyes may be confused in two ways - by a change from light to darkness or from darkness to light; and he will recognize that the same thing happens to the soul.

Equals, the proverb goes, delight in equals.

Arithmetic is a kind of knowledge in which the best natures should be trained, and which must not be given up.

I have this tattooed on my left side! I love the saying and it's a perfect description of Karma, don't judge/discriminate and don't do to someone what you wouldn't want done to you.

These, then, will be some of the features of democracy... it will be, in all likelihood, an agreeable, lawless, parti-colored commonwealth, dealing with all alike on a footing of equality, whether they be really equal or not.

There is a ... matter - much more valuable and divine than natural philosophy . ... On this matter I must speak to you in enigmas.