Conceal thy domestic ills.
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.
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
The past is certain, the future obscure.
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.