Paul Strand
[Photographer, b. 1890, New York, d. 1976, Oregeval, France.]
All good art is abstract in its structure.

William Eggleston
[Photographer, b. 1939, Memphis, Tennessee, lives in Memphis.]
I’ve always assumed that the abstract qualities of [my] photographs are obvious. For instance, I can turn them upside down and they’re still interesting to me as pictures. If you turn a picture that’s not well organized upside down, it won’t work.

Harry Callahan
[Photographer, b. 1912, Detroit, Michigan, d. 1999, Atlanta, Georgia.]
Everything was Bauhaus this and Bauhaus that. I wanted to break it... I got tired of experimentation. I got sick of the solarization and reticulation and walked-on negatives. What I was interested in was the technique of seeing... I introduced problems like “evidence of man,” and talking to people—making portraits on the street... I thought [the students] should enter into dealings with human beings and leave abstract photography. I felt that social photography would be the next concern.

Neil Postman
[Writer and media critic, b. 1931, New York, d. 2003, Queens, New York.]
By itself photography cannot deal with the unseen, the remote, the internal, the abstract, it does not speak of “Man,” only of “a man”; not of “Tree,” only “a tree.”

Barbara Kasten
[Photographer, b. 1936, Chicago, Illinois, lives in Chicago.]
I am asking the question “can a photograph be an abstraction?” simply because it seemed almost impossible. A camera has to have something to record... Can I make a photograph that is based in something that is not tangible?

Edward Weston
[Photographer, b. 1886, Highland Park, Illinois, d. 1958, Wildcat Hill, California.]
I shall let no chance pass to record interesting abstractions, but I feel definite in my belief that the approach to photography is through realism—and its most difficult approach.
(1924) 
Minor White
[Photographer, writer, and theorist, b. 1908, Minneapolis, Minnesota, d. 1976, Cambridge, Massachusetts.]
The spring-tight line between reality and photography has been stretched relentlessly, but it has not been broken. These abstractions... have not left the world of appearances; for to do so is to break the camera’s strongest point—its authenticity.

Tristan Tzara (Sami Rosenstock)
[Writer and artist, b. 1896, Moineti, Bacu, Romania, d. 1963, Paris.]
Is it a spiral of water in the tragic gleam of a revolver, an egg, a glistening arc or the floodgate of reason, a keen ear attuned to a mineral hiss, or a turbine of algebraic formulas?
(On Man Ray’s first photograms, 1921.) 