On June 8, 2010, while on a book tour for his bestselling memoir, Hitch-22, Christopher Hitchens was stricken in his New York hotel room with excruciating pain in his chest and thorax. As he would later write in the first of a series of award-winning columns for Vanity Fair, he suddenly found himself being deported “from the country of the well across the stark frontier that marks off the land of malady.” Over the next eighteen months, until his death in Houston on December 15, 2011, he wrote constantly and brilliantly on politics and culture, astonishing readers with his capacity for superior work even in extremis. Throughout the course of his ordeal battling esophageal cancer, Hitchens adamantly and bravely refused the solace of religion, preferring to confront death with both...