"All of you should realize the vital, functioning, living Buddha Mind! For several hundred years now, [people in] both China and Japan have
misunderstood the Zen teaching, trying to attain enlightenment by doing zazen or trying to find 'the one who sees and hears,' all of which is a great mistake.
Zazen is just another name for original mind, and means to sit in tranquility with a tranquil mind. When you do sitting meditation, you're simply sitting, just as you are; when you do walking meditation, you're walking, just as you are."
(Bankei Zen, p. 96, tr. Haskel)
"To exert yourselves in religious practice, trying to produce enlightenment by doing religious practices and zazen, is all wrong too. There's no difference between the mind of all the buddhas and the Buddha Mind of each one of you. But by wanting to realize enlightenment, you create a duality between the one who realizes enlightenment and what it is that's being realized. When you cherish even the smallest desire to realize enlightenment, right away you leave behind the realm of the Unborn and go against the Buddha Mind. This Buddha Mind you have from your parents innately is one alone—not two, not three!"
(Bankei Zen, p. 76, tr. Haskel)