Mountains and waters right now are the actualization of the ancient Buddha way. Each, abiding in its phenomenal expression, realizes completeness. Because mountains and waters have been active since before the [beginning of time], they are alive at this moment. Because they have been the self since before form arose they are emancipation realization. ...
Priest Daokai of Mt. Furong said to the assembly, "The green mountains are always walking; a stone woman gives birth to a child at night." Mountains do not lack the qualities of mountains. Therefore they always abide in ease and always walk. You should examine in detail this quality of the mountains walking. Mountains' walking is just like human walking. Accordingly, do not doubt mountains' walking even though it does not look the same as human walking. The Buddha ancestors' words point to walking. This is fundamental understanding. You should penetrate these words.
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Green mountains master walking and eastern mountains master traveling on water. Accordingly, these activities are a mountain's practice. Keep its own form, without changing body and mind, a mountain always practices in every place. Don't slander by saying that a green mountain cannot walk and an eastern mountains cannot travel on water. When your understanding is shallow, you doubt the phrase, "Green mountains are walking." When your learning is immature, you are shocked by the words "flowing mountains." Without full understanding even the words "flowing water," you drown in small views and narrow understanding. Yet the characteristics of mountains manifest their form and life-force. There is walking, there is flowing, and there is a moment when a mountain gives birth to a mountains child. Because mountains are Buddha ancestors, Buddha ancestors appear in this way.