Henri Cartier-Bresson (1908 - 2004)

Henri Cartier-Bresson, En Brie, June 1968
Henri Cartier-Bresson, En Brie, June 1968

From The Decisive Moment (1952):

To me, photography is the simultaneous recognition, in a fraction of a second, of the significance of an event as well as of a precise organization of forms which give that event its proper expression.