At the crossroads of philosophy, artistic practice, and art history.Though Gilles Deleuze and Felix Guattari were not strictly art historians, they reinvigorated ontological and formal approaches to art, and simultaneously borrowed art historical concepts for their own philosophical work. They were dedicated modernists, inspired by the German school of expressionist art historians such as Riegl, Wölfflin, and Worringer and the great modernist art critics such as Rosenberg, Steinberg, Greenbe...