Perhaps art begins with the animal, at least with the animal that carves out a territory and constructs a house (both are correlative, or even one and the same, in what is called a habitat). The territory-house system transforms a number of organic functions— sexuality, procreation, aggression, feeding. But this transformation does not explain the appearance of the territory and the house; rather it is the other way around: The territory implies the emergence of pure sensory qualities, of sensibilia that cease to be merely functional and become expressive features, making possible a transformation of functions. No doubt this expressiveness is already diffused in life……
This emergence of pure sensory qualities is already art, not only in the treatment of external materials but in the body’s postures and colors, in the songs and cries that mark out the territory.
–excerpt What Is Philosophy
by Gilles Deleuze and Felix Guattari page 183-184
