A Pathfinder upgraded edition. Drawing on his experience as a central leader of the Cuban Revolution, Guevara explains why the revolutionary transformation of social relations necessarily involves the transformation of the working people organizing and leading that process. "To build communism it is necessary, simultaneous with the new material foundations, to build the new man." Includes Castro’s 1987 speech on the 20th anniversary of Guevara’s death. Photos. Now with index, biographies, and enlarged type. Also available in: French, Swedish, Farsi