Kim's work has won the praise of many, not least Robert Aitken Roshi, an American with a lifetime's experience of Zen training. In his foreword to the third edition, Aitken Roshi stated:
"this revised edition . . .now includes many new translations and studies of Dogen, and thus it is most welcome. Dogen wrote at the outermost edge of human communication, touching with every sentence such mysteries as self and other, self and non-self, meditation and realization, the temporal and the timeless, forms and the void.@He wrote of the attitude necessary for understanding, of the practice required. . .of the various insights that emerge, and of the many pitfalls. He did not generally write for beginners - most of his points require very careful study and a few of them elude almost everybody. These challenges are compounded by his creative use of the Japanese language. It has been said that he wrote in "Dogenese," for he made verbs of nouns, nouns of verbs, created new metaphors, and manipulated old sayings to present his particular understanding. . . "
Prof. Kim's study has been based on a careful reading of Dogen's chosen idioms. He has endeavoured to amplify Dogen's understanding of 'do-ri' - or 'reason of the way.' Kim is keen to show that Dogen's use of Zen language is not merely provisional or instrumental, but embodies a 'realisational' dimension. This is exemplified in the notion of the 'genjo-koan' or koan realised in the present, which is to say, actualised in every day activity. In this way, Kim endeavours to show that Dogen's Zen culminates in ' the great way of total exertion' (gujin no daido) or the total actualisation of practice as realization. Kim is a foremost interpreter of Dogen's thought - and, as such, this book deserves a place in every Buddhist library. My only reservation about this study, is that it might have made better sense of the question of how the so-called 'instrumentalist' aspect of koan practice relates to the 'realizational' aspect. Quite rightly, Kim is at pains to point out that accounts of Zen which stress the 'instrumentalist' view of koan practice - and that alone, are one sided, and he has therefore endeavoured to illustrate a different perspective. However, without reflection, we might be left to conclude that Rinzai Zen favours the 'instrumentalist' view - and Soto, the 'realizational' view. Kim knows better, and indeed, in places (p. 165), he has cited certain remarks from Dogen, which concede that the term 'genjo-koan' originated with Engo - a Rinzai master of the Sung, evidently meaning that Rinzai practitioners have appreciated the 'realizational' aspect. As such, the critical references to (Dai-e) Ta-hui which appear elsewhere in the book, seem strangely out of tenor with this fact. Yuan-wu (Engo) was Ta-hui's teacher, and the latter must surely have known of his master's references to the genjo-koan. Conversely, much as we might identify Dogen's Zen with 'shikantaza' (just-sitting), playing down the instrumentalist approach, Dogen also had his experience of 'casting off mind and body' (shinjindatsuraku) - a breakthrough experience more or less akin to that realised by Rinzai followers. Perhaps Prof. Kim will enlighten us on this unresolved problem, at some future point.