The story of the Zen Master whose only response was always "Is that so?" shows the good that comes through inner nonresistance to events, that is to say, being at one with what happens. The story of the man whose comment was invariably a laconic "Maybe" illustrates the wisdom of nonjudgment, and the story of the ring points to the fact of impermanence which, when recognized, leads to nonattachment. Nonresistance, nonjudgement, and nonattachment are the three aspects of true freedom and enlightened living.
Eckhart Tolle (2009). “A New Earth: Create a Better Life”, p.160, Penguin UK