Steve, a sixty-two-year-old homeless military veteran, made his way to a warm climate where sleeping outdoors was tolerable year-round. One evening, as he displayed his hand-drawn art—his attempt to earn some money—a young woman approached and offered him several slices of pizza. Steve gratefully accepted. Moments later, Steve shared his bounty with another hungry, homeless person. Almost immediately, the same young woman resurfaced with another plate of food, acknowledging that he had been generous with what he’d been given...