A state of true and universal tolerance is best ensured by leaving alone the peculiarities of men and peoples.

On top of the world, or in the depths of despair.

Master and Doctor are my titles; for ten years now, without repose, I held my erudite recitals and led my pupils by the nose.

He is a man whom it is impossible to please, because he is never pleased with himself.

The phrases that men hear or repeat continually, end by becoming convictions and ossify the organs of intelligence.

Human life runs its course in the metamorphosis between receiving and giving.

We rather confess our moral errors, faults, and crimes than our ignorance.