Umberto Eco
[Writer, semiotician, and philosopher, b. 1932, Alessandria, Piedmont, Italy, d. 2016, Milan.]

 The photograph [of Che Guevara], for a civilization now accustomed to thinking in images, was not the description of a single event... it was an argument. 

Frederick Engels, Karl Marx
[Political philosopher, b. 1818, Barmen, Germany, d. 1895, London.]
[Political philosophers, b. 1818, Trier, Germany, d. 1883, London.]

 If in all ideology men and their circumstances appear upside-down as in a camera obscura, this phenomenon arises just as much from their historical life-process as the inversion of objects on the retina does from the physical life-process. 

Mary Beth Edelson
[Artist and feminist activist, b. 1935, East Chicago, Indiana, lives in New York.]

 The camera is in fact usually the only witness to my private rituals—the best of them have been when I am alone. 

Walker Evans
[Photographer, b. 1903, St. Louis, Missouri, d. 1975, New Haven, Connecticut.]

 I do note that photography, a despised medium to work in, is full of empty phonies and worthless commercial people. That presents quite a challenge to the man who can take delight in being in a very difficult, disdained medium. 

Olafur Eliasson
[Artist, b. 1967, Copenhagen, Denmark, lives in Berlin, Germany.]

 Photographs have a relevance for things that cannot be said. 

Alfred Eisenstaedt
[Photographer, b. 1898, Dirschau, West Prussia (now Tczew, Poland), d. 1995, New York.]

 When I have a camera in my hand, I know no fear. 

Albert Einstein
[Scientist, b. 1879, Ulm, Württemberg, Germany, d. 1955, Princeton, New Jersey.]

 I dislike every photograph taken of me. However, this one I dislike a little bit less. (On the portrait by Philippe Halsman, who he excluded from his normal characterization of photographers as Lichtaffen—“Light monkeys.”) 

T.S. Elliot
[Poet and critic, b. 1888, St. Louis, Missouri, d. 1965, London.]

 There is a time for the evening under starlight,
A time for the evening under lamplight
(The evening with the photograph album).