Like Cats and Dogs: Contesting the Mu Koan in Zen Buddhism
In a careful analysis of the historical and rhetorical basis of the literature, Steven Heine demonstrates that the Mu version of the case, preferred by advocates of the key-phrase approach, does not by any means constitute the final word concerning the meaning and significance of the Mu Koan. He shows that another canonical version, which gives both "Yes" and "No" responses, must be taken into account. Like Cats and Dogs offers critical insight and a new theoretical perspective on "the koan of koans."
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[Heine] is able to raise a number of valuable questions about the history of this text, but there are two primary questions. First, why is this particular response to the question about a dog’s Buddha-nature so predominant (what Heine calls the “Ur Version”), when there are a number of alternative responses to this question in the textual history of Chan Buddhism? In other examples there are affirmative answers to the question, or both affirmative and negative answers, or additional questions and statements concerning the initial question. [End Page 671]
Second, why has Dahui’s insistence on the authority of Zhaozhou’s Mu come to displace the rich literary heritage of other renowned patriarchs devoted to alternative versions? Dahui’s most notable contribution to kōan practice is his use of the key-phrase or “head-word” method, epitomized in Zhaozhou’s Mu, where the student is told to forget all concerns about the particulars of question-and-answer in the case, and instead simply focus on Mu alone. In this approach, what Heine calls “Emphatic Mu,” the primary power of Zhaozhou’s Mu is in its capacity to block any linguistic entry to realization, so that the student must demonstrate their insight in a direct, nonverbal fashion. Heine contrasts the Emphatic Mu approach to an “Expansive Mu” method where “words perpetuate words” (p. 29). The latter is exemplified in “Dual Version” cases where one finds both affirmative and negative answers to the initial question, thus encouraging original literary responses to reveal and expand the practitioner’s insights. Heine traces the Expansive Mu approach to Hongzhi in the twelfth-century Southern Song, and finds this approach most prominently displayed in the works of the thirteenth-century Japanese Zen master, Eihei Dōgen.
While Heine’s critical historical study uncovers important omissions and inconsistencies in contemporary scholarship on the Mu kōan, its most significant contribution...
https://terebess.hu/zen/mesterek/Heine-Cats.pdf