In May 1968, Gilles Deleuze (1925-1995) was an established philosopher teaching at the innovative Vincennes University, just outside of Paris. Félix Guattari was a political militant and the director of an unusual psychiatric clinic at La Borde. That the two should meet was quite unlikely-and yet, while Deleuze was recovering from lung surgery, he met Guattari in an arranged encounter that led to a surprising relationship and several books, including Anti-Oedipus, What is Philosophy, and A Thousand Plateaus.François Dosse examines the productive if unlikely twenty-year partnership between two men of distinct sensibilities. Drawing on unpublished archives and hundreds of personal interviews, Dosse elucidates this enduring collaboration through familial and historical contexts and the turbulent years of 1968. He also measures the posthumous fortunes of these two writers within their intellectual, academic, and professional circles both in France and beyond.