Robert Doisneau
[Photographer, b. 1912, Gentilly, Val-de-Marne, France, d. 1994, Montrouge, France.]
Photography is very subjective. Photography is not a document on which a report can be made. It is a subjective document. Photography is a false witness, a lie. 
George Orwell (Eric Arthur Blair)
[Writer, b. 1903, Motihari, Bengal, India, d. 1950, London.]
Processions, meetings, military parades, lectures, waxwork displays, film shows, telescreen programs all had to be organized; stands had to be erected, effigies built, slogans coined, songs written, rumours circulated, photographs faked. W.H. Auden
[Poet and writer, b. 1907, York, North Yorkshire, England, d. 1973, Vienna, Austria.]
The steady eyes of the crow and the camera’s candid eyeSee as honestly as they know how, but they lie.
Lincoln Kirstein
[Writer, critic, and impresario, b. 1907, Rochester, New York, d. 1996, New York.]
The candid camera is the greatest liar in the photographic family.... It is anarchic, naïve, and superficial. Auguste Rodin
[Artist, b. 1840, Paris, France, d. 1917, Paris.]
It is the artist who is truthful and photography which lies, for in reality time does not stop, and if the artist succeeds in producing the impression of a movement which takes several moments for accomplishment, his work is certainly much less conventional than the scientific image, where time is abruptly suspended. Martha Rosler
[Artist, b. 1943, Brooklyn, New York, lives in New York.]
The question at hand is the danger posed to truth by computer-manipulated photographic imagery. How do we approach this question in a period in which the veracity of even the straight, unmanipulated photograph has been under attack for a couple of decades. Pedro Meyer
[Photographer, b. 1935, Madrid, Spain, lives in Mexico City.]
Before, the myth of “photography doesn’t lie” was used in order to cover up tricks. If I [make a] portrait [of] you, accommodate you, illuminate you, put make up on you or use a filter, am I not manipulating reality? The only difference is that now I can do it from the computer in the postclick instead of the preclick. If I decide to photograph something instead of something else, I also manipulate reality. Of course a photograph can lie or commit abuse, but it always could. Susan Sontag
[Writer, theorist, and critic, b. 1933, New York, d. 2004, New York.]
Contrary to what is suggested by the humanist claims made for photography, the camera’s ability to transform reality into something beautiful derives from its relative weakness as a means of conveying the truth.