“As writers, we articulate thoughts and experiences, but as photographers and filmmakers we articulate images of looking and being. What is thought is only implied, unless it is appended in writing or speech. Some would say that images, then, are not in any sense knowledge. They simply make knowledge possible, as data from observations. But in another sense they are what we know, or have known, prior to any comparison, judgment, or explanation. There is a perceptual as well as a conceptual kind of knowledge. This knowledge has no propositional status (of generality, of explanation) except the proposition of its own existence. It remains to a large extent inert, untapped. Only in the will to declare it do we detect the stirrings of thought.”

– David MacDougall, The Corporeal Image: Film, Ethnography, and the Senses (2006: 5).