Common sense is the genius of humanity.

Doubt grows with knowledge.

The most happy man is he who knows how to bring into relation the end and beginning of his life.

It is not enough to take steps which may someday lead to a goal; each step must be itself a goal and a step likewise.

Nothing is more odious than the majority, for it consists of a few powerful leaders, a certain number of accommodating scoundrels and submissive weaklings, and a mass of men who trot after them without thinking, or knowing their own minds.

Oh happy he who still can hope in our day to breathe the truth while plunged in seas of error! What we don't know is really what we need, and what we know is of no use to us whatever!

Man is a simple being, and however rich, varied, and unfathomable he may be, the cycle of his situations is soon run through.