In a series of philosophical discussions and artistic case studies, this volume develops a materialist and immanent approach to modern and contemporary art. The argument is made for a return to aesthetics--an aesthetics of affect--and for the theorization of art as an expanded and complex practice. Staging a series of encounters between specific Deleuzian concepts--the virtual, the minor, the fold, etc.--and the work of artists that position their work outside of the gallery or "outside" of representation--Simon O'Sullivan takes Deleuze's thought into other milieus, allowing these "possible worlds" to work back on philosophy.