The most difficult thing in life is to know yourself.
What man is happy? He who has a healthy body, a resourceful mind, and a docile nature.
We live not, in reality, on the summit of a solid earth but at the bottom of an ocean of air
Suretyship (Dogma) is the precursor of ruin.
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.
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.