 In the Commentary on the Sūtra of Intent (Ārya-saṃdhinirmocana-sūtra, Mdo sde ca 1b–55b) it is stated that “Reality as it is, which is the intentional object of a pure consciousness, is the definition of the perfect nature. This must be so because it is with respect to this that the Victorious Buddha attributed all phenomena as natureless, ultimately.” (Mdo sde ca 35b) Vasubandhu’s [TSN] defines “the perfect nature (pariniṣpanna) as the eternal nonexistence of ‘as it appears’ of ‘what appears’ because it is unalterable.” ([TSN] 3, Sems tsam chi 10a) “What appears” is the dependent nature—a series of cognitive events, the representations. “As it appears” is the imaginary nature—the unreal conceptual fabrication of the subject-object duality. The representations, (i.e., the dependent nature) appear in the cognition as if they have in them the subject-object duality, even though the dependent nature is wholly devoid of such subject-object duality. The perfect nature is therefore this eternal nonexistence of the imaginary nature—the duality—in the dependent nature.