“And Petschek had asked—because he was genuinely puzzled by this—why so many people, Americans especially, seemed to feel that happiness was an entitlement. By dint of his own experiences as a refugee and a wanderer, Petschek found the notion to be strangely naive and immature—especially here at the bottom of a chasm whose ramparts offered such irrefutable testimony not only to the smallness of human affairs but also to the universe’s implacable indifference to those hopes and longings. Yet”