How we cite our quotes: (Part.Chapter.Paragraph)
Quote #7
"It must be nice to glide in the water and feel oneself stroked all over." (1.4.117)
Louise has a passion for Frederick that's awkwardly but violently physical; here, she envies the way fishes live. Hey, to each her own.
Quote #8
But the clerk had theories of his own. All that was necessary in order to get a thing was to desire it strongly. (1.5.252)
Deslauriers functions under the philosophy that if you want something badly enough, you'll get it. That sort of holds true with Frederick, so why does he blow it?
Quote #9
Having seen nothing of the world save through the fever of his desires, he pictured it to himself as an artificial creation discharging its functions by virtue of mathematical laws. (1.5.296)
Deslauriers has his own desires. But unlike Frederick, he's able to control his desires through his impulse to be reasonable. Not as interesting as Frederick, sure, but certainly (slightly) less tortured.