William Butler Yeats
[Poet and mystic, b. 1865, Dublin, Ireland, d. 1939, Menton, France.]

 The visible world is no longer a reality and the unseen world no longer a dream. 

Boris Yaro
[Photographer, b. 1938, lives in Northridge, California.]

 Let go, lady. Godammit, this is history! (Trying to get a clear shot of the dying Robert Kennedy.) 

Kansuke Yamagata
[Photographer and poet, b. 1914, Nagoya, Japan, d. 1987, Nagoya.]

 [Experimental] photography—unlike a knife or fountain pen—has no practical use or function. We can locate the rationale for photography’s superiority in its total lack of purpose, complete uselessness, and absolute meaninglessness.