釋禪波羅蜜次第法門 9.57

9.57

一、無常想者，觀一切有為法無常，智慧相應故，名無常想。所以者何？一切有為法新新生滅故，屬因緣故，不增積故，生時無所從來，滅時無所去處，故名無常。是中無常有二種：一者、眾生無常；二者、世界無常。

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.