摩訶止觀 3.111

3.111

夫眾生入悟不同，或聞無開解；或聞有超悟；或聞中發徹。乃至觀心亦爾，或說有觀，恍如雲影；或作無觀，泯失身心；或作中觀，神智明白。如是等種種不同，應在一不在二；應在二不在一。故云：「佛說生法，於無生法得度，佛說無生法，於生法得度。」此即是用第一義悉檀意也。

Sentient beings' entry into awakening varies: some, hearing of non-existence, open to understanding; some, hearing of existence, transcend into awakening; some, hearing of the middle, achieve penetrating realization. This is even so with contemplation of the mind: some expound the contemplation of existence, and it is faint like the shadow of a cloud; some perform the contemplation of non-existence, and body and mind vanish; some perform the contemplation of the middle, and their spiritual wisdom becomes clear and luminous. Such diverse variations should be in one and not in two, or should be in two and not in one. Therefore it is said: 'When the Buddha expounds arisen phenomena, one attains liberation in the unarisen Dharma; when the Buddha expounds unarisen phenomena, one attains liberation in arisen phenomena.' This is the intention of using the supreme-meaning siddhānta.