I strongly recommand the work of my teacher, Mike Chodo Cross. Mike did the donkey work on the Nishijima translation of the shobogenzo and his knowledge and understanding of Dogen is beyond anything you can imagine. Here it is an amazing document with Dogen kanji explained one at a time and a copy of the original written by Dogen:



http://the-middle-way.org/subpage8.html

gassho

Taigu