 The controversial idea of “the Buddha-nature of insentient beings” is developed by Zhanran in his Jingangpi using a slightly different approach to the Three Truths, focusing on the trope of space as advanced as a metaphor for Buddha-nature in the Mahāyāna Nirvana Sutra, in its character of all-pervasiveness, ineradicability, and indivisibility, and the non-different/non-identical relation of all regions of space to each other and of each region of space to whatever possible object can occupy it. But here too the central argument is the inseparable intersubsumption of the two opposite terms: sentience is always insentience-sentience, insentience is always sentience-insentience.