What is it that is most beautiful? - The Universe; for it is the work of God. What is most powerful? - Necessity; because it triumphs over all things. What is most difficult? - To know one's self. What is most easy? - To give advice. What method must we take to lead a good life? - To do nothing we would condemn in others. What is necessary to happiness? - A sound body and a contented mind.

Who is happy? This is a person, who has a healthy body, is dowered with peace of mind and cultivates his talents.

Suretyship (Dogma) is the precursor of ruin.

I will be sufficiently rewarded if when telling it to others you will not claim the discovery as your own, but will say it was mine.

Nothing is more active than thought, for it travels over the universe, and nothing is stronger than necessity for all must submit to it.

There are three attributes for which I am grateful to Fortune: that I was born, first, human and not animal; second, man and not woman; and third, Greek and not barbarian.

Many words are not proof of the wise man, because the sage only talk when it's needed, and the words are measured and corresponding with the need.