"The notion was rapidly spreading that all you have to do to be a mystic is learn a new mental worldview. … You know, we went through all this with Alan Watts. God knows nobody did more for mystical studies, especially Zen, than Alan, and I don't know a single person of my generation interested in transcendence who wasn't touched deeply by the man. Nobody could write like Watts, nobody. But it was just that—words. It was only at the end of his life that he rather surreptitiously began to admit that the core of Zen is, in fact, zazen."
January 1, 1970
https://en.wikiquote.org/wiki/Alan_Watts