Harry Truman on Iteration
Iteration and revision, according to Robert Pirsig, anyway:
Harry Truman, of all people, comes to mind, when he said, concerning his administration's programs, “We'll just have to try them ... and if they don't work ... why then we'll just try something else.” That may not be an Exact quote, but it's close.
– Robert Pirsig, on Harry Truman, on Iteration, Zen and the Art of Motorcycle Maintenance, p. 284.