The one thing worth living for is to keep one's soul pure.

I cannot comprehend how any man can want anything but the truth.

Live not as though there were a thousand years ahead of you. Fate is at your elbow; make yourself good while life and power are still yours.

Thou sufferest justly: for thou choosest rather to become good to-morrow than to be good to-day.

How barbarous, to deny men the privilege of pursuing what they imagine to be their proper concerns and interests! Yet, in a sense, this is just what you are doing when you allow your indignation to rise at their wrongdoing; for after all, they are only following their own apparent concerns and interests. You say they are mistaken? Why then, tell them so, and explain it to them, instead of being indignant.

Or is it your reputation that's bothering you? But look at how soon we're all forgotten. The abyss of endless time that swallows it all. The emptiness of those applauding hands. The people who praise us; how capricious they are, how arbitrary. And the tiny region it takes place. The whole earth a point in space - and most of it uninhabited.

A person's worth is measured by the worth of what he values.