Book 1 presents translations of twenty-one chapters of Shobogenzo including Genjo-koan (The Realized Universe), Soku-shin-ze-butsu Mind Here & Now is Buddha), Uji (Existence-Time), and Sansuigyo (The Sutra of Mountains & Water). Its several reference sections include a Chinese/English appendix of references to the Lotus Sutra, and an extensive Sanskrit glossary.
"At last I visited Zen Master Nyojo of Dai-byaku-ho mountain, and there I was able to complete the great task of a lifetime of practice. After that, at the beginning of the great Sung era of Shojo, I came home determined to spread the Dharma and to save living beings, it was as if a heavy burden had been placed on my shoulders....I will leave this record to people who learn in practice and are easy in the truth, so that they can know the right Dharma of the Buddha's lineage. This may be a true mission."