James Agee
[Writer, b. 1909, Knoxville, Tennessee, d. 1955, New York.]
It is clear enough by now to most people that “the camera never lies” is a foolish saying. Yet it is doubtful whether most people realize how extraordinarily slippery a liar the camera is. 
Errol Morris
[Documentary filmmaker, b. 1948, Hewlett, New York, lives in Cambridge, Massachusetts.]
Photographs attract false beliefs the way flypaper attracts flies. Bert Hardy
[Photographer, b. 1913, London, d. 1995, Oxted, England.]
I made a point of carrying a contact print of one of the most horrifying of my photographs around with me to show to Germans who didn’t believe that such things had really happened. (On the Nazi concentration camps) Although I do not usually like taking pictures of corpses, I controlled my feelings of rage for long enough to take some; without such evidence, no one would believe that anything like this had ever happened. (On photographing the liberation of the Bergen-Belsen Concentration Camp, April 19, 1945) God (Judeo-Christian Version)
[Omnipotent artist, critic, creator and destroyer, before time, lives everywhere and nowhere.]
Driven back and utterly shamedShall be those who trust in an image.
(Judeo-Christian version of God; Isaiah 42:17)
Lady Elizabeth Eastlake (Elizabeth Rigby)
[Writer and photographer, b. 1809, London, d. 1893, London.]
Thus are the incidents of time, and the forms of space, simultaneously recorded; and every picture becomes an authentic chapter in the history of the world.
(1857) Paul Valéry
[Writer and poet, b. 1871, Sète, France, d. 1945, Paris.]
The mere notion of photography, when we introduce it into our meditation on the genesis of historical knowledge and its true value, suggests the simple question: Could such and such a fact, as it is narrated here, have been photographed? Philip Jones Griffiths
[Photojournalist, b. 1936, Rhuddian, Wales, d. 2008, London.]
The twentieth century was the time of photography, when almost everything of importance was recorded and considered true because it was photographed. Nowadays nearly anyone can produce a photograph of Ladybird Johnson standing on the grassy knoll with a smoking gun in her hand and no one can prove it’s a fake.