大乘起信論義記 2.96

2.96

Question: What is the difference between this one consciousness having two meanings and the above One Mind having two gates? Answer: The above One Mind contains two meanings: the meaning of not preserving its own nature and according with conditions, and the meaning of not changing its own nature and transcending marks. Here, it is only with respect to the mark of the non-duality of defiled and pure, principle and phenomena, within the gate of according with conditions that this consciousness is explained. Thus, the meaning of the previous One Mind is broad and encompasses both gates, whereas the meaning of this one consciousness is narrow and restricted to one gate.