釋禪波羅蜜次第法門 9.57

9.57

First, "the notion of impermanence": contemplating all conditioned dharmas as impermanent, because it corresponds with wisdom, is called the notion of impermanence. Why is this? Because all conditioned dharmas arise and cease newly in each moment, because they depend on causes and conditions, and because they do not accumulate; when arising they come from nowhere, and when ceasing they go nowhere; therefore they are called impermanent. Herein, impermanence is of two kinds: first, impermanence of sentient beings; second, impermanence of the world.