“Like a virus, too, the cigarette mutated, adapting itself to diverse contexts. In the Soviet gulags, it became an informal currency; among English suffragettes, a symbol of rebellion; among American suburbanites, of rugged machismo, among disaffected youth, of generational rift. In the turbulent century between 1850 and 1950, the world offered conflict, atomization, and disorientation. The cigarette offered its equal and opposite salve: camaraderie, a sense of belonging, and the familiarity of habits. If cancer is the quintessential product of modernity, then so, too, is its principal preventable cause: tobacco.”