首楞嚴義疏注經 3.16

3.16

First, refuting arising from the realm: within the realm itself, brightness and darkness oppose each other; conditioned by brightness, one does not see darkness, because when it is dark there is no brightness, and seeing is extinguished along with brightness; conditioned by darkness, it is the reverse. Next, refuting arising from the faculty: arising from the faculty does not depend on brightness and darkness; when brightness and darkness do not arrive, the faculty has no own-nature. Arising from the faculty mentioned here means looking at itself from itself, not referring to refuting consciousness; it can also refer to the ultimate faculty viewed against the conventional faculty, hence it says "arising from the faculty." Next, refuting arising from space: if one says space can produce it, the ultimate [faculty] would be inside the floating dusts; looking forward it would observe images, and returning it should observe the faculty. Furthermore, if space itself were able to have seeing, what would it have to do with your eye entrance?