Fabulous book. I read it when I was sixteen and it was my second book on philosophy. I had to keep a dictionary beside me as I read it because the vocabulary was esoteric, but it made me want to read it more. It changed the way I thought about things and helped me see relationships between events and ideas that at first glance might seem unrelated. In seeking to understand this book, I exposed myself to a way of thinking very alien to my experience up until that point. It was very rewarding. I highly recommend it if you want to glimpse something greater of yourself. Doing nothing else unusual except reading 2/3 of this book and praying, my SAT scores leaped from 1150 to 1350. It is the best book of its kind. Truly. After reading it, most autobiographical works of modern WEstern Zen practitioners will seem flat and trite. If nothing else, you will better be able to discern what is crap in Zen literature.