François Dosse traces the lives and works of the two authors Gilles Deleuze (1925-1995) and Félix Guattari (1930-1992). Their paths are closely intertwined: Deleuze and Guattari co-authored philosophical and psychoanalytic books over a span of more than 20 years, whose influence on intellectual history is now undisputed. They managed to combine a creative way of thinking with a new style. Dosse's book presents not a single biography, but a multitude of biographies, as it treats the lives, theoretical, and political practices of both authors in parallel, allowing a third, dual line of intellectual engagement to emerge. In this way, the author succeeds in providing a richly detailed portrayal of that time in France, spanning from the early 1930s through May '68 to the upheavals of the late 1980s.