Shundo David Haye – Zen Priest

‘Dogen Zenji asks: “How do you think the unthinkable?” Answering
himself, Dogen says: “non-thinking”. “Non” is not merely a negation.
In this case “non” means beyond, transcendent, or emancipated.
Non-thinking is the state of one’s mind beyond the thinkable, yet
including it. Non-thinking is to transcend “no thinking” and to
become free. The function of thinking exists, of course, but you are
able to transcend it and free yourself…

I would like to recommend that you practice zazen. By doing so you
will get a taste of what non-thinking means. It is difficult to
understand what non-thinking means by listening to a lecture. Please
practice zazen. The experience of non-thinking is not only very
important, but essential in the practice of zazen. It enables you to
realize how valuable zazen is.’ (from The Center of Dogen Zenji’s Teaching)

I imagine I found this collection of talks while I was browsing Cuke.com recently; in any case, there are transcripts of lectures given (in Japanese as I understand it) at Tassajara during the training periods that Tatsugami led in 1969 and 1970.