This book was not bad, but it was not what I was expecting. I would say it's only valuable for more advanced zen students who want to read as much as they can.
Kobun Chino was, I have no doubt, an inspiring, insightful, effective teacher of zen. I can feel it, reading this book. There is in fact something remarkable about that transmission of feeling. This book is a collage of near-verbatim transcripts of his extemporaneous talks during meditation retreats. You get to experience his thought process, his random imaginings, the path his mind takes. And I do think his mind, as portrayed here, is refreshing and deep. I get glimpses of things that strike me and make me curious to learn more.
I just don't find this book particularly readable. And it would certainly not be good as an introduction of zen. There is a lack of clarity here - many concepts are not fully explained or described, despite the glossary at the back. To really know what he's talking about, you need to have studied zen elsewhere, at least a little bit.
There is some value in keeping Kobun's thoughts raw here, in contrast to, say, the books of his peers - Suzuki Shunryu or Katagiri Dainin. Their books are also collections of talks, but they are highly polished and edited for readability and comprehension. There is, no doubt, something lost, but I wonder if it's worth preserving it in a book. After all, zen is a tradition that values face-to-face relationships almost to the exclusion of anything else. Writing is barely even secondary.
It just doesn't work for me. Ultimately, I think reading spontaneous talks given by a teacher to his closest students during intense meditation is a lot like reading transcripts of phone calls between lovers. Certainly, there could be something of interest there, but the message wasn't really meant for you. And you miss out on the real substance of the relationship.
I would avoid this book, unless you are a zen nerd and/or particularly curious about Kobun Chino himself.