"Why do you take photographs so constantly, so obsessively? Why do you collect other people's photographs? Why do you scavenge in secondhand shops and buy old albums of other people's pasts?
So that I'll see what I've seen."
But this, of course, isn't Shields at all, but Janette Turner Hospital, in The Last Magician. So one might rephrase this: in what way is a photograph a quotation? Why do you scavenge obsessively in other people's written works? So that I can see what I've seen...? Is this the nature of the intertextual? It seems to be not at all true of today's particular mode of taking photographs (with a macro lens, with a 550EX speedlite, extracting one little frame of lily) - this is what the lens sees, focused on one part of a flower: this is not what the brain registers the eye as seeing, for it scans backwards and forwards and gives depth to the image).