When he painted a road, the roadmakers were there in his imagination, when he painted the turned earth of a ploughed field, the gesture of the blade turning the earth was included in his own act. Whenever he looked he saw the labour of existence; and this labour, recognised as such, was what constituted reality for him. (On Vincent Van Gogh)
John BergerPhotographs bear witness to a human choice being exercised in a given situation. A photograph is a result of the photographer's decision that it is worth recording that this particular event or this particular object has been seen. If everything that existed were continually being photographed, every photograph would become meaningless.
John Berger