It is part of the photographer's job to see more intensely than most people do. He must have and keep in him something of the receptiveness of the child who looks at the world for the first time or of the traveler who enters a strange country. 
Bill Brandt, "Camera in London", The Focal Press, 1948

 Good photography (...) comes from a state of grace. Grace comes when you are delivered from conventions, obligations, conveniences, competition and you are free, like a child in his first discovery of reality. 
Sergio Larrain, letter to Agnès Sire, published in "Sergio Larrain", Ed. Xavier Barral, 2013