Love born in the brain is more spirited, doubtless, than true love, but it has only flashes of enthusiasm; it knows itself too well, it criticizes itself incessantly; so far from banishing thought, it is itself reared only upon a structure of thought.

If you want to be witty, work on your character and say what you think on every occasion.

To find love in Paris you must go down among those classes where the absence of education and of vanity, and the struggle for bare necessities, have allowed more energy to survive.

Never had he found himself so close to those terrible weapons of feminine artillery.

Mathematics allows for no hypocrisy and no vagueness.

People happy in love have an air of intensity.

Any man who talks about his love affairs thereby proves he is ignorant of love and is moved only by vanity.