What man is happy? He who has a healthy body, a resourceful mind, and a docile nature.

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.

Place is the greatest thing, as it contains all things.

What man is happy? He who has a healthy body, a resourceful mind, and a docile nature.

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

We live not, in reality, on the summit of a solid earth but at the bottom of an ocean of air

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.