"For many people, philosophy is something which is not ‘made’, but is pre-existent, ready-made in a prefabricated sky. However, philosophical theory is itself a practice, just as much as its object. It is no more abstract than its object. It is a practice of concepts, and it must be judged in the light of the other practices with which it interferes."
— Gilles Deleuze, Cinema 2: The Time-Image (1989: p. 280)