It is impossible for someone to dispel his fears about the most important matters if he doesn't know the nature of the universe but still gives some credence to myths. So without the study of nature there is no enjoyment of pure pleasure.

Nothing is enough for the man to whom enough is too little.

The wise man neither rejects life nor fears death... just as he does not necessarily choose the largest amount of food, but, rather, the pleasantest food, so he prefers not the longest time, but the most pleasant.

Is God willing to prevent evil, but not able? Then he is not omnipotent. Is he able, but not willing? Then he is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?

I was not; I have been; I am not; I do not mind.

When someone admits one and rejects another which is equally in accordance with the appearances, it is clear that he has quitted all physical explanation and descended into myth.

Nothing is sufficient for the person who finds sufficiency too little