The reason why we have to acquire wealth is the body, because we are slaves in its service.

Knowing thyself is the height of wisdom.

I know one thing, that I know nothing.

The really important thing is not to live, but to live well. And to live well meant, along with more enjoyable things in life, to live according to your principles.

The shortest and surest way to live with honor in the world, is to be in reality what we would appear to be, all human virtues increase and strengthen themselves by the practice and experience of them.

It is possible that a man could live twice as long if he didn't spend the first half of his life acquiring habits that shortens the other half

Every pleasure or pain has a sort of rivet with which it fastens the soul to the body and pins it down and makes it corporeal, accepting as true whatever the body certifies.