It seems that we take our good fortune for granted, and when fortune turns ugly we lament the world’s unfairness. What do those who are blessed by fortune really know about the unfairness of the world? If the U.S. economy collapses and America goes hungry, will we remember the misfortunes of Bangladesh, Biafra, or Sudan? If millions suffer abroad, do we imagine that we are immune? The happiness of America, suggests Philosophy, is chance happiness. By its very nature, this happiness cannot last. It is temporal, it is transitory. One day our material happiness must turn to physical suffering and...