The thought is a deed. Of all deeds she fertilizes the world most. - 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.

Here, on a human face, appeared all the ruin following upon hopeless labour. Laveuve's unkempt beard straggled over his features, suggesting an old horse that is no longer cropped; his toothless jaws were quite askew, his eyes were vitreous, and his nose seemed to plunge into his mouth. But above all else one noticed his resemblance to some beast of burden, deformed by hard toil, lamed, worn to death, and now only good for the knackers.

This woman was as necessary to his life as eating and drinking.