Paul Berman traces the utopian energies that erupted in 1968 through their unexpected transformations over the following decades, connecting student radicalism, gay liberation, Eastern European dissidence, and transatlantic intellectual debates into a single narrative of idealism's evolution. Beginning with the global student uprisings, Berman follows participants who moved from revolutionary dreams through disillusionment to new forms of engagement—some becoming neoconservatives, others maintaining radical commitments in altered forms. He provides intimate portraits of figures like Daniel Cohn-Bendit, whose journey from Paris barricades to German Green Party politics exemplifies the generational trajectory. The book's central argument holds that 1968's rebels and 1989's freedom fighters shared more than is commonly recognized: both generations challenged totalitarian thinking while struggling to imagine alternatives to existing systems. Berman, a journalist and intellectual historian, draws on extensive interviews and archival research to reconstruct the atmosphere of each moment—the excitement of possibility, the bitter factional disputes, the gradual recognition that revolution produces unintended consequences. His chapters on French intellectual life examine how thinkers processed the disappointments of Marxism, while his analysis of Václav Havel and Czech dissidents reveals different responses to similar questions about truth, power, and moral responsibility. Readers interested in how political generations form, fracture, and influence their successors will find this comparative history illuminating.