Minor White said this quote
“ To get from the tangible to the intangible (which mature artists in any medium claim as part of their task) a paradox of some kind has frequently been helpful. For the photographer to free himself of the tyranny of the visual facts upon which he is utterly dependent, a paradox is the only possible tool. And the talisman paradox for unique photography is to work the mirror with a memory as if it were a mirage, and the camera is a metamorphosing machine, and the photograph as if it were a metaphor…. Once freed of the tyranny of surfaces and textures, substance and form [the photographer] can use the same to pursue poetic truth (Minor White, Newhall, 281). ”