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

The wealth required by nature is limited and is easy to procure; but the wealth required by vain ideals extends to infinity.

If thou wilt make a man happy, add not unto his riches but take away from his desires.

It is better for you to be free of fear lying upon a pallet, than to have a golden couch and a rich table and be full of trouble.

My garden does not whet the appetite; it satisfies it. It does not provoke thirst through heedless indulgence, but slakes it by proffering its natural remedy. Amid such pleasures as these have I grown old.

There is no such thing as justice in the abstract; it is merely a compact between men in their various relations with each other, in whatever circumstances they may be, that they will neither injure nor be injured.

We cannot live pleasantly without living wisely and nobly and righteously.