大方廣佛華嚴經隨疏演義鈔 75.45

75.45

Regarding the commentary's "The above four gates each preserve both and mutually negate to form the four propositions": as in the first gate of permanence and impermanence, it says: first is permanent; second is impermanent; third, combining the preceding, forms both permanent and impermanent, hence called "preserving both"; fourth, in terms of mutual negation, it forms neither permanent nor impermanent—impermanence negates permanence, hence neither permanent; permanence negates impermanence, hence not impermanent. This means precisely because the essence is devoid of reality, it is by self-nature impermanent. The three gates below should be understood by analogy.