宏智禪師廣錄 1.38

1.38

Ascending the hall, he said: "Its essence is ever more empty yet universally responds; its function is ever more substantial yet ever as such. Therefore the ancients said: 'The blue mountain is the father of the white cloud; the white cloud is the son of the blue mountain. All day long the white cloud leans upon it, yet the blue mountain does not know it at all.' Assembly, since it leans upon it all day long, why does it not know it? Do you understand? Wild birds chirp of themselves, flowers smile of themselves; it has nothing to do with the person sitting in Chan beneath the crag."