His favorite quote does not come from his favorite book, it comes from an American novelist who died before he was even born.
The quote goes: "Knowing a man well almost always leads to love and never leads to hate." -John Steinbeck.
He has the quote printed on a small yellow note tacked to his computer. He asked Sally to write it for him. When his work reaches a lag, such as when the mass spectrometer is whirring away endlessly and fingerprints are being run he'll find himself staring at the long, luxurious swirling letters. The message is branded into the back of his mind.
He finds it oddly suits him.