If anyone is unhappy, remember that his unhappiness is his own fault... Nothing else is the cause of anxiety or loss of tranquility except our own opinion.

You can be invincible, if you enter into no contest in which it is not in your power to conquer.

Difficulties are things that show a person what they are.

Silence is safer than speech.

Nothing truly stops you. Nothing truly holds you back. For your own will is always within your control.

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.

Do not strive for things occurring to occur as you wish, but wish the things occurring as they occur, and you will flow well.