" Just as the speaking subject only understands and speaks as a possessor of a system of gesticulation defined by dimensions of variation, the subject that perceives movement can only do so inasmuch as he possesses the equivalences of a sort of natural language: that's what sensory fields are, given diacritical systems with use values and characteristic equivalences. But between these fields there are also equivalences, like a common language of these dialects. "

― Maurice Merleau-Ponty , The Sensible World and the World of Expression: Course Notes from the Collège de France, 1953