This is a rather dry and dull account of a mishmosh of topics interspersed with moments of hilarity, quotable quotes and a little bit of insight into the Japanese culture of the late 80's.
Above all, my takeaway is that everyone was wasting their time, from Chadwick, to Norman, to the 'Korean' monk, and most of the others there. As he only admits towards the end, the institution exists to perpetuate the institution, to raise the next generation of obedient monks, and above all to instill blind conformity and soul-destroying 'harmony' which is code for a dog-eat-dog racist mindset based on seniority.
The author tries very hard to belabor his prose, capture zen wisdom, and generally pad out the length. The interweaving of the two different time periods (his monastery life with his later married life still living in Japan) is, as he says at the beginning, because the monastery life is unbearably dull. All of the above is a failure... but at least he's honest about it in the title.
Perhaps 4 stars is generous. Most of, but not all, the monastery stuff is meaningless. I was much more interested in the daily life and culture of regular Japanese people. "Just Pretend" seems to be the key to their society, according to Chadwick.