Much earlier in the novel, Willem lamented the “culture of self-fulfillment,” which pressures people to have lofty dreams and considers it a personal failing if a person falls short of attaining them. This passage brings up a similar cultural attitude toward happiness, which holds that anybody can be happy—and if a person isn’t happy, it's because they haven’t tried hard enough. Jude has no such illusions, though. He just doesn’t think happiness is something that’s universally attainable. He believes some people, like Willem, can have it. But others, like Jude, are too broken to experience happiness.