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

All things change, and you yourself are constantly wasting away. So also is the universe.

A rational nature admits of nothing but what is serviceable to the rest of mankind.

Failure to read what is happening in another's soul is not easily seen as a cause of unhappiness: but those who fail to attend the motions of their own soul are necessarily unhappy.

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.

The whole universe is change and life itself is but what you deem it - either gratefully better than or bitterly worse than something else that you alone choose.

A man's happiness,-to do the things proper to man.