Japanese Death Poems. Compiled by Yoel Hoffmann. ISBN 978-0-8048-3179-6; Quoted in: Lawrence Winkler. Samurai Road. 2016. p. 25
“The true purpose of Zen is to see things as they are, to observe things as they are, and to let everything go as it goes. Zen practice is to open up our small mind.”
Prologue
Zen Mind, Beginner's Mind (1973)
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Shunryu Suzuki 39
Japanese Buddhist missionary 1904–1971Related quotes

“A true Zen saying: "Nothing is what I want.”

“When other sects speak well of Zen, the first thing that they praise is its poverty.”
III, 7
Shobogenzo Zuimonki (1238)

On singing. Southern Courier, February 2010 http://southern-courier.whereilive.com.au/lifestyle/story/body-on-the-line/

“The only Zen you find on tops of mountains is the Zen you bring there.”
Source: Zen and the Art of Motorcycle Maintenance (1974), Ch. 20
Context: Zen is the "spirit of the valley." The only Zen you find on the tops of mountains is the Zen you bring up there.

Lecture in Los Altos, CA (1 September 1967) http://www.shunryusuzuki.com/suzuki/transcripts-pdf/67-pdf/67-08-31U.pdf
Context: What is true zazen? What do you mean by Zen becomes Zen and you become you? You become you is a very important point. You become you. When you become you, even though you are in bed, you may not be you most of the time. Even though you are sitting here, I wonder whether you are you in its true sense. So to be you is zazen.

Alan Watts, on Zen (2015) https://www.youtube.com/watch?v=eh-3FJs2pz8
Context: I want to make one thing absolutely clear. I am not a Zen Buddhist, I am not advocating Zen Buddhism, I am not trying to convert anyone to it. I have nothing to sell. I'm an entertainer. That is to say, in the same sense, that when you go to a concert and you listen to someone play Mozart, he has nothing to sell except the sound of the music. He doesn’t want to convert you to anything. He doesn’t want you to join an organization in favor of Mozart's music as opposed to, say, Beethoven's. And I approach you in the same spirit as a musician with his piano or a violinist with his violin. I just want you to enjoy a point of view that I enjoy.