Emile Zola
[Writer, b. 1840, Paris, France, d. 1902, Paris.]

 In my view you cannot claim to have seen something until you have photographed it. 

Marius de Zayas
[Artist, b. 1880, Veracruz, Mexico, d. 1961, Greenwich, Connecticut.]

 Photography is not an Art. It is not even an art. Photography is the plastic verification of a fact... Art presents to us what we may call the emotions or intellectual truth; photography the material truth. (1913) 

Li Zhensheng
[Photographer, b. 1940, Dalian, China, lives in Beijing.]

 No one asked me to take close-ups of the bodies, but that’s what I did. I had to get very close, so close I could smell the fishy smell of blood and brains. (On his photographs of Red Guard executing prisoners in Harbin, China during the Cultural Revolution.) 

Frank Zappa
[Musician and composer, b. 1940, Baltimore, Maryland, d. 1993, Los Angeles.]

 And if another woman driver
Gets machine-gunned from her seat
They’ll send some joker with a brownie
And you’ll see it all complete. 

Piet Zwart
[Designer, photographer, and typographer, b. 1885, Zaandjik, Netherlands, d. 1977, Wassenaar, Netherlands.]

 We used the camera only as a means of expression and as a visual medium that offers possibilities found in no other artistic technique, possibilities that the eye cannot catch in their totality. We tried to establish a characteristic vision of photography.