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

Injustice is not evil in itself, but only in the fear and apprehension that one will not escape those who have been set up to punish the offense.

Pleasure is the first good. It is the beginning of every choice and every aversion. It is the absence of pain in the body and of troubles in the soul.

The acquisition of riches has been for many men, not an end, but a change, of troubles.

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

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.

Let no young man delay the study of philosophy, and let no old man become weary of it; for it is never too early nor too late to care for the well-being of the soul.