The acceptance of ambiguity implies more than the commonplace understanding that some good things and some bad things happen to us. It means that we know that good and evil are inextricably intermixed in human affairs; that they contain, and sometimes embrace, their opposites; that success may involve failure of a different kind, and failure may be a kind of triumph.
Sydney J. Harris (1986). “Clearing the ground”, Houghton Mifflin Harcourt