These writings of Dogen contain one of the most fascinating teachings in Zen literature, that of the Time Being.This teaching is of rare and great price. However in fact the whole book is full of wonderful paradox and many open questions that are at the heart of Zen and, scholar or not, the teachings require leaps of extreme reliquishment of mundane and pedestrian thinking that blights us in this overly rational world.Like so much of the greatest poetry and literature this book is one that may require constant rereading in order to find the treasure that is potentially there on every page.As more and more translations of Zen Buddhist teachings are coming on stream I feel I would like to pay tribute to those who are working away to get the numerous treasures of the Japanese and Chinese documents translated and into the West.In my own book I have written on the fly leaf 'Beware all ye that enter here! It is a portal of transformation. Do not expect to enter, travel and return!'