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.
                                    
“Today, I'm totally zen.”
Brisbane International 2016 http://www.smh.com.au/sport/tennis/brisbane-international-2016-federers-advice-to-kyrgios-and-tomic-twins-torment-and-other-stories-from-a-night-on-stage-with-sharapova-20160103-glyg4o.html
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Roger Federer 32
Swiss tennis player 1981Related quotes
“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.
                                    
“I just had to stay cool. Zen. No punching in the face. Punching would not be Zen.”
Source: Magic Bleeds
                                        
                                        "The Way Of Chuang Tzu". 
The Way of Chuang-Tzŭ (1965) 
Context: The humor, the sophistication, the literary genius, and philosophical insight of Chuang Tzu are evident to anyone who samples his work. But before one can begin to understand even a little of his subtlety, one must situate him in his cultural and historical context. That is to say that one must see him against the background of the Confucianism which he did not hesitate to ridicule, along with all the other sedate and accepted schools of Chinese thought, from that of Mo Ti to that of Chuang's contemporary, friend, and constant opponent, the logician Hui Tzu. One must also see him in relation to what followed him, because it would be a great mistake to confuse the Taoism of Chuang Tzu with the popular, de generate amalgam of superstition, alchemy, magic, and health culture which Taoism later became.
The true inheritors of the thought and spirit of Chuang Tzu are the Chinese Zen Buddhists of the Tang period (7th to 10th centuries A. D.). But Chuang Tzu continued to exert an influence on all cultured Chinese thought, since he never ceased to be recognized as one of the great writers and think ers of the classical period. The subtle, sophisticated, mystical Taoism of Chuang Tzu and Lao Tzu has left a permanent mark on all Chinese culture and on the Chinese character itself. There have never been lacking authorities like Daisetz T. Suzuki, the Japanese Zen scholar, who declare Chuang Tzu to be the very greatest of the Chinese philosophers. There is no question that the kind of thought and culture represented by Chuang Tzu was what transformed highly speculative Indian Buddhism into the humorous, iconoclastic, and totally practical kind of Buddhism that was to flourish in China and in Japan in the various schools of Zen. Zen throws light on Chuang Tzu, and Chuang Tzu throws light on Zen.
                                    
                                        
                                        The Paris Review interview (1982) 
Context: My Zen master, because I’ve studied Zen for a long time, told me that every one (and all the stories weren’t written then) of the Mary Poppins stories is in essence a Zen story. And someone else, who is a bit of a Don Juan, told me that every one of the stories is a moment of tremendous sexual passion, because it begins with such tension and then it is reconciled and resolved in a way that is gloriously sensual. … A great friend of mine at the beginning of our friendship (he was himself a poet) said to me very defiantly, “I have to tell you that I loathe children’s books.” And I said to him, “Well, won’t you just read this just for my sake?” And he said grumpily, “Oh, very well, send it to me.” I did, and I got a letter back saying: “Why didn’t you tell me? Mary Poppins with her cool green core of sex has me enthralled forever.”
                                    
Modern Buddhism: The Path of Compassion and Wisdom (2011)
“Zen is the "spirit of the valley."”
                                        
                                        The only Zen you find on the tops of mountains is the Zen you bring up there. 
Source: Zen and the Art of Motorcycle Maintenance (1974), Ch. 20