The mind that is much elevated and insolent with prosperity, and cast down with adversity, is generally abject and base.

You don't develop courage by being happy in your relationships everyday. You develop it by surviving difficult times and challenging adversity.

The flesh believes that pleasure is limitless and that it requires unlimited time; but the mind, understanding the end and limit of the flesh and ridding itself of fears of the future, secures a complete life and has no longer any need for unlimited time.

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

The term "incorporeal" is properly applied only to the void, which cannot act or be acted on. Since the soul can act and be acted upon, it is corporeal.

The misfortune of the wise is better than the prosperity of the fool.

I never desired to please the rabble. What pleased them, I did not learn; and what I knew was far removed from their understanding.