Most of the Zen in the West is what I shall call for now “Dogen Zen” which follows Dogen’s practice of “just sitting” (shikantaza) which Dogen believed is synonymous with enlightenment. In the West, there are variations of Dogen Zen from “Sanbokyodan” to the “Dogen Sangha”, to name just two.
Despite nominal differences found in Dogen Zen most Western Zennists, it is fair to say, follow the teachings of Dogen and much less the teachings of the Buddha and Mahayana Buddhism. One might even say, Dogen is their Buddha. Incidentally, Dogen had utter contempt for the Zen sect itself. He said of it that it “is a designation for Mara. Those who use the devil’s terminology are the accomplices of the devil and not followers of the Buddha and the patriarchs” (Dumoulin, A History of Zen Buddhism [1963], p. 160).
Dogen began his Buddhist career as a Tendai monk as did Nichiren and other noteworthy Japanese Buddhists during the Kamakura period. He understood the basis of Zen to rest on the theory that everything, that is, all phenomena, is the Buddha-nature but then took one step further when he maintained that meditational practice (zazen, shikantaza) and enlightenment/realization are one. More precisely, while beings have Buddha-nature, innately, acquisition of the Buddha-nature can only be achieved by the physical act of cross-legged sitting (zazen). With the physical body in the cross-legged position, Dogen believed the mind is likewise in the state of the Buddha. It is only by means of seated meditation that innate enlightenment is manifested.
Dogen Zen, to be sure, is a simplification of Mahayana Buddhism. But Mahayana Buddhism makes no mention of seated meditation or that zazen is one with enlightenment. Nor is the physical practice of ‘just sitting’ (shikantaza) mentioned in the Mahayana canon or the Pali/Agama canon.
Comparing Dogen Zen with traditional Zen, the latter is about Mind’s endeavor to realize itself and by doing so to distinguish itself (prajñâ) from its illusory phenomena thus winning emancipation. In short, mind sets out to realize Buddha Mind which is not a phenomenon like our thoughts or, for that matter, anything like the Five Aggregate apparatus we call our body. To realize Mind, Zen doesn’t rely on physical cross-legged sitting. Rather, it is a process of awakening to one’s true spiritual nature which lies beyond the pale of the physical. In fact, it was never the intention of the first teachers who brought Zen or Ch’an to China to teach just sitting as if sitting is enlightenment. These teachers rightly taught Buddha Mind. They wanted us to directly experience this luminous substance for ourselves. Further, with such an awakening we shall see that all things are composed from it, being in this regard mere superimpositions like the snake superimposed on the rope.
It needs emphasizing that Dogen Zen is not about the importance of seeing Buddha Mind—it is about the practice of sitting. When Dogen Zen is measured against the Buddhist canon, especially the canon of Mahayana Buddhism, it comes up short. It is Mind that is the essence of Mahayana, according to the Mahayanasraddhotpadasastra (The Awakening of Faith in the Mahayana attributed to Asvaghosha), not zazen. And this is acknowledged by all the Zen masters of the golden age of Zen.
My advice to beginners is be aware of what your Zen center teaches. If it teaches ‘Dogen Zen’ keep in mind its limitations and try to study other forms of Buddhism from Theravada to Tibetan Buddhism. Don’t limit yourself.