[Jack] was being left here with the merchants and the accountants, the barristers with their busyness and hollow Eyes and looking-away … … a servitude in which he was another moving Part churning product towards profit” (15)
-- Narration (Part 1, Chapter 3)

Importance: This quote summarizes Jack's experience of being a commodity, something imprisoned by the ambitious greed of capitalism. The reference to him as a Part (note the capital) suggests that he feels, or is seen (by the capitalist Eyes watching him - again, note the capital) not as a human being, but as part of a machine.

Bess saw quickly that what defined this class, above all else, was their ability to recognize the evils of the World and count themselves above it. Their capacity to lie and self-flatter. Merchants, after all, love nothing so much as believing that they alone among their class are in possession of Ethics and Virtue.”
-- Narration   (Part 1, Chapter 4)

Importance: Again, a condemnation of capitalism -...