The author's tone sometimes becomes anxious and urgent when discussing commercial culture and design, both in the West, where materiality is "ever-encroaching" (p. 3), and in Japan, where "the space afforded to wabi sabi is certainly on the decline, and its future relevance to Japan is under threat" (p. 58). Also, he treads very lightly when discussing the way wabi sabi objects became status symbols in Japan.
The volume itself is a well-designed paperback with a readable font, wide margins, and austere black-and-white photographs that present some very memorable images.
Immediately after finishing reading this book, I wanted to give it a rating of four stars. The next day I noticed that I was thinking about the spaces and objects in my life a different way, so I've upped the rating to five stars. Read the book and give it a few days to work.