Emptiness, the ultimate nature of Dharmakaya, the Ultimate Body, is not a simple nothingness. It possesses intrinsically the faculty of knowing the nature of all phenomena. This faculty is the luminous or cognitive aspect of the Dharmakaya, whose expression is spontaneous. The Dharmakaya is not the product of causes and conditions; it is the original nature of mind.

—Kyabje Dilgo Khyentse Rinpoche