books.google.com - Bodhidharma, its first patriarch, reputedly said that Zen Buddhism represents "a special transmission outside the teaching/Without reliance on words and letters." This saying, along with the often perplexing use of language (and silence) by Zen masters, gave rise to the notion that Zen is a "lived religion"...http://books.google.com/books/about/The_Zen_Canon_Understanding_the_Classic.html?id=3myqwNwPgJkC&utm_source=gb-gplus-shareThe Zen Canon : Understanding the Classic Texts