It is a mark of a mean capacity to spend much time on the things which concern the body, such as much exercise, much eating, much drinking, much easing of the body, much copulation. But these things should be done as subordinate things: and let all your care be directed to the mind.

It is better to die of hunger having lived without grief and fear, than to live with a troubled spirit, amid abundance

Shall I show you the sinews of a philosopher? What sinews are those? - A will undisappointed; evils avoided; powers daily exercised; careful resolutions; unerring decisions.

There is but one way to tranquility of mind and happiness, and that is to account no external things thine own, but to commit all to God.

A half-hearted spirit has no power. Tentative efforts lead to tentative outcomes. Average people enter into their endeavors headlong and without care.

Act well your given part; the choice rests not with you.

Men are not troubled by things themselves, but by their thoughts about them