弘明集 4.33

4.33

答曰。天下寧有無形之有云云。尋來旨似不嫌有鬼。當宜有質得無惑。天竺之書說鬼別為生類耶。昔人以鬼神為教。乃列于典經布在方策。鄭僑吳札亦以為然。是以雲和六變實降天神。龍門九成人鬼咸格。足下雅秉周禮近忽此義。方詰無形之有。為支離之辯乎。

Reply: You say: 'Can there be in the world an existent without form?' and so forth. Searching your intended purport, you seem not to dislike the existence of ghosts, but hold that ghosts should have material substance. Could you be deluded? Is it because the books of Tianzhu describe ghosts as a separate class of living beings? When the ancients took ghosts and spirits as their teaching, they set them forth in canonical scriptures and displayed them on tablets. Zheng Qiao and Wu Zha also considered this to be so. Therefore, when the Yunhe music was transformed six times, celestial spirits truly descended; when the Longmen music was completed in nine parts, human ghosts all arrived. You, sir, elegantly adhere to the Rites of Zhou, yet recently you neglect this meaning, and are just now questioning the existence of the formless—is this not a fragmented disputation?