When our friends are present we ought to treat them well; and when they are absent, to speak of them well.

Men are not worried by things, but by their ideas about things. When we meet with difficulties, become anxious or troubled, let us not blame others, but rather ourselves. That is: our ideas about things.

It is no easy thing for a principle to become a man's own unless each day he maintains it and works it out in his life.

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.

When you let go of your attention for a little while, do not think you may recover it whenever you please.

If someone irritates you, it is only your own response that is irritating you. Therefore, when anyone seems to be provoking you, remember that it is only your judgment of the incident that provokes you. -

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