Pathinenkilkanakku Tathagatagarbha soteriological atman emptiness dharmakaya tamasic Buddhahood synergist Brahman sunyata sattvic Reclusive Peryroyl tathagata Morasko venerations oneness Lankavatara unchanging panentheistic physis shon ontological Zhentong Jinenkan buddha AGRICULTURE phusis Tathagata monistic Yellowcraigs Buddha knowable dualism sutras Abhidhamma anatta theism