The first lessons with which we should irrigate his mind should be those which teach him to know himself, and to know how to die ... and to live.

Stupidity and wisdom meet in the same centre of sentiment and resolution, in the suffering of human accidents.

The most universal quality is diversity.

I give my opinion not as being good, but as being my own.

Socrates, who was a perfect model in all great qualities, ... hit on a body and face so ugly and so incongruous with the beauty of his soul, he who was so madly in love with beauty.

How many things we held yesterday as articles of faith which today we tell as fables.

It is good to rub and polish our brain against that of others.