首楞嚴義疏注經 4.92

4.92

First, from brightness, obscurity, and motion, there is the wind wheel; with wind moving and brightness standing firm, there are precious metals; metal and wind rubbing together generate the nature of fire; fire steaming the moisture of metal gives rise to water; water and fire interacting have superior and inferior forces: water prevailing and fire being inferior forms oceans and continents, fire prevailing and water being inferior forms mountains and rocks, earth being inferior and water prevailing forms grasses and trees, and so forth. Although the external marks are like this, all are due to the internal mind; if there were no alteration in the internal mind, how could there be distinction externally? The sūtra temporarily speaks in terms of the external; hence it is said, "mutually serving as seeds for one another."