大方廣圓覺修多羅了義經略疏 1.181

1.181

圓覺者，直指法體。若不克體標指，則不知向來說何法大、說何法廣？圓者，滿足周備，此外更無一法。覺者，虛明靈照，無諸分別念想。故論云：「所言覺義者，謂心體離念，離念相者等虛空界，即是如來平等法身，依此法身說名本覺。」釋曰：此是釋如來藏心生滅門中本覺之文也。故知此覺，非離凡局聖、非離境局心。心境、凡聖本空，唯是靈覺，故言圓也。下文說：「涅槃昨夢、世界空華，眾生本成佛道。」又云：「一切覺故。」又云：「幻滅覺圓滿。」

"Perfect Enlightenment" points directly to the essence of the Dharma. If one does not directly indicate the essence itself, one would not know what dharma the previous discussion called great or what dharma it called broad. "Perfect" means complete, fully equipped, and all-pervading, outside of which there is no other dharma. "Enlightenment" means empty, luminous, and spiritually radiant, free from conceptual discrimination and thought. Thus the *Treatise [on the Awakening of Faith]* states: "The meaning of enlightenment is that the essence of the mind is free from thought. That which is free from the mark of thought is equal to the realm of empty space; this is the equal dharmakāya of the Tathāgata, and relying on this dharmakāya it is named original enlightenment." Explanation: this is a passage explaining original enlightenment within the aspect of arising and ceasing of the tathāgatagarbha mind. Therefore we know that this enlightenment is neither separated from ordinary beings nor confined to sages, neither separated from objects nor confined to mind. Mind and objects, ordinary beings and sages, are fundamentally empty; there is only spiritual enlightenment, hence it is called "perfect." Below, the text states: "Nirvāṇa is yesterday's dream, the world is a flower in the sky, and sentient beings have originally accomplished the Buddha Way." It also says: "Because everything is enlightenment." And again: "When illusion ceases, enlightenment is perfect."