The book includes the works of the famous thirteenth-century Zen master Dogen, the founder of Soto Zen. Dogen taught non-duality between enlightenment and Zen practice. Sitting in zazen is already enlightenment. According to Dogen, at first it is necessary to awaken the idea of ​ ​ enlightenment, in the sincere pursuit of which lies the path of the Buddha and the patriarchs.