Know you not that a good man does nothing for appearance sake, but for the sake of having done right?

What disturbs and alarms man are not the things, but his opinions and fancies about the things.

When you want to hear a philosopher, do not say, 'You say nothing to me'; only show yourself worthy or fit to hear, and then you will see how you will move the speaker.

Freedom is the only worthy goal in life. It is won by disregarding things that lie beyond our control. Stop aspiring to be anyone other than your own best self: for that does fall within your control.

First tell yourself what you want to be, then do what you need to do.

First learn the meaning of what you say, and then speak.

Keep your attention focused entirely on what is truly your own concern, and be clear that what belongs to others is their business and none of yours.