 Zen presumably inherits this analogy of the original mind as mirror from both Mahāyāna and Daoist sources. In the traditional edition of The Platform Sutra of the Sixth Patriarch, however, all residues of dualistic discrimination—including those that remain even in the notion of a mirror that needs to be continually wiped clean of impurities—are swept away in the famous lines: “Originally there is not a single thing” (Chinese: benlai wu-yi-wu; Japanese: honrai mu-ichi-motsu). In this quintessential Zen expression are wedded together the meontological and psychological senses of wu/mu: a rejection of an ontology of independent substances, a declaration of an originary (self-negating) nothingness, and an expression of a radical freedom from egoistic attachment as well as freedom for spontaneous creativity and compassion.