維摩經玄疏 5.109

5.109

答曰：雖復下地思不知上地，上地思能知下地，皆是思量知，非不思量知，故皆屬思議也。今不共不思議，下地不以思，思於上地；上地亦不以思，思於下地。下地以不思，思於上地，而不能知上地；上地不思之智，任運能知下地。下地不思，故尚不能知上地思議之智，何況能知不思議之智！上地不思之智，任運能知下地不思議之智，何況思議智耶！故知下地、上地雖有知與不知，而俱是不思議也。

Answer: Although the deliberation of a lower ground does not know a higher ground, and the deliberation of a higher ground can know a lower ground, both are knowledge through deliberation and not knowledge without deliberation; thus both belong to the conceivable. Now, as for the unshared inconceivable, a lower ground does not use deliberation to deliberate upon a higher ground, nor does a higher ground use deliberation to deliberate upon a lower ground. The lower ground uses non-deliberation to deliberate upon a higher ground, yet cannot know the higher ground; the higher ground's wisdom of non-deliberation spontaneously can know the lower ground. Because the lower ground does not deliberate, it cannot even know the higher ground's conceivable wisdom, let alone know its inconceivable wisdom! The higher ground's wisdom of non-deliberation spontaneously can know the lower ground's inconceivable wisdom, let alone its conceivable wisdom! Thus we know that although higher and lower grounds have knowing and not knowing, both are alike inconceivable.