The state of mind of a photographer while creating is a blank. For those who would equate "blank" with a kind of static emptiness, I must explain this is a special kind of blank. It is a very active state of mind really, a very receptive state of mind, ready at an instant to grasp an image, yet with no image pre-formed in it at any time.
We should note that the lack of a pre-formed pattern or preconceived idea of how anything ought to look is essential to this blank condition.
Such a state of mind is not unlike a sheet of film, seemingly inert, yet so sensitive that a fraction of a second's exposure conceives a life in it. Not just life, but 'a' life.
―Minor White