Nothing is more irritating than to hear honest writers protest about depravity when one is quite certain that they make these noises without knowing … - Émile Zola

Essentially, Doctor Pascal's only faith was his faith in life. Life was the unique manifestation of the divine. Life was God, the great motive power, the soul of the universe. And the sole instrument of life was heredity, which made the world; so that if one could only understand it, master it and make it do one's bidding, one could remake the world at will.

She was cold by nature, self-love predominating over passion; rather than being virtuous, she preferred to have her pleasures all to herself.

"And that wreched creature without hands or feet, who had to be put to bed and fed like a child, that pitiable remnant of a man, whose almost vanished life was nothing more than one scream of pain, cried out in furious indignation: 'What a fool one must be to go and kill oneself!' " - 'Joy of Life