Man (in good earnest) is a marvellous vain, fickle, and unstable subject, and on whom it is very hard to form any certain and uniform judgment.

An untempted woman cannot boast of her chastity.

I say that male and female are cast in the same mold; except for education and habits, the difference is not great.

Most pleasures embrace us but to strangle.

Every one is well or ill at ease, according as he finds himself! not he whom the world believes, but he who believes himself to be so, is content; and in him alone belief gives itself being and reality

Wonder is the foundation of all philosophy; research, the progress; ignorance, the end. There is, by heavens, a strong and generous kind of ignorance that yields nothing, for honour and courage, to knowledge: an ignorance to conceive which needs no less knowledge than to conceive knowledge.

Philosophical discussions habitually make men happy and joyful not frowning and sad.