Time is like a river made up of the events which happen, and a violent stream; for as soon as a thing has been seen, it is carried away, and another comes in its place, and this will be carried away too.

Always follow these two rules: first, act only on what your reasoning mind proposes for the good of humanity, and second, change your opinion if someone shows you it's wrong. This change of mind must proceed only from the conviction that it's both correct and for the common good, but not because it will give you pleasure and make you popular.

Remember that all is opinion. For what was said by the Cynic Monimus is manifest: and manifest too is the use of what was said, if a man receives what may be got out of it as far as it is true.

It is not the body, nor the personality that is the true self. The true self is eternal. Even on the point of death we can say to ourselves, "my true self is free. I cannot be contained."

Our wills are ours, to make them Thine.

The true worth of a man is to be measured by the objects he pursues.

Men exist for each other. Then either improve them, or put up with them.