“We have to go back to 1944 to the very first concept of a kind of photography that would become part of the human being, an adjunct to your memory, something that was always with you so that when you looked at something you could in effect press a button and have a record of it -- and its accuracy, its intricacy, its beauty -- forever...the dream which I used to talk about then of being able to take a wallet out of my pocket and perhaps open the wallet, press a button, close the wallet and have the picture.”