"One bright pearl, coined by T'ang master Hsuan-sha, is symbolic of enlightenment... Since it is embodied, there is no need to "understand" in the conventional sense. Delusion is part of the one bright pearl, symbolized by the Black Mountain (the massive darkness of ignorance) and the Cave of Demons (egotistic self-enclosure). The main thrust of this exchange is that enlightenment affirms delusion.
Awakening involving the total self contains the reality of delusion...
Even if there is perplexed or troubled thinking, it is not apart from the bright pearl. Coming and going in the Black Mountain's Cave of Demons are themselves nothing but the one bright pearl."
- Taitetsu Unno -River of Fire, River of Wate

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