Do everything like someone is gazing at you.

Let nothing be done in your life, which will cause you fear if it becomes known to your neighbor.

I have never wished to cater to the crowd; for what I know they do not approve, and what they approve I do not know.

Is he neither able nor willing? Then why call him God?

Happiness is man's greatest aim in life. Tranquility and rationality are the cornerstones of happiness.

The honor paid to a wise man is a great good for those who honor him.

Vain is the word of a philosopher which does not heal any suffering of man. For just as there is no profit in medicine if it does not expel the diseases of the body, so there is no profit in philosophy either, if it does not expel the suffering of the mind.