A man should remove not only unnecessary acts, but also unnecessary thoughts, for then superfluous activity will not follow.

Ambition means tying your well-being to what other people say or do. Self-indulgence means tying it to the things that happen to you. Sanity means tying it to your own actions.

This is the chief thing: be not perturbed, for all things are according to the nature of the universal.

Frequently consider the connection of all things in the universe. .. We should not say 'I am an Athenian' or 'I am a Roman' but 'I am a citizen of the Universe.

To live each day as though one's last, never flustered, never apathetic, never attitudinizing - here is the perfection of character.

Nature which governs the whole will soon change all things which you see, and out of their substance will make other things and again other things... in order that the world may be ever new.

He who does wrong does wrong against himself. He who acts unjustly acts unjustly to himself, because he makes himself bad.