[I]f photography were difficult in the true sense . . . that the creation of a simple photograph would entail as much time and effort as the production of a good watercolor or etching -- there would be a vast improvement in total output.
Source: A Personal Credo, in American Annual of Photography, vol. 58, 1944.
-- Ansel Adams, (Feb 20 1902-1984), US landscape photographer, conservationist; He helped establish photography as an art form while capturing the beauty of western U.S.