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

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  If you would improve, be content to be thought foolish by others.

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  No man is free who is not master of himself.

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  Do not spend too much time on the body; let your chief care be the mind.

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  Behave as at a banquet: take what is offered to you, and do not reach out for what has not yet come.

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  Take care of what you have been given as of something entrusted to you, not as something that is yours forever.

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  Be not elated at any excellence which belongs to another.

All quotes