C.S. Sloan's Integral Strength

 Shoshin means "beginner's mind."   Mushin means "empty mind" or "no mind."  When I was a teenager, and trained in a very  traditional Isshin-Ryu  dojo, my sensei always referred to it as "no mind."  The "mu" in "mushin" is a negation .  It's most well-known use in Zen is in the koan "Joshu's dog," which is sometimes referred to simply as the "mu" koan.  (If you're unaware, a koan is a Japanese Zen term that can be a story, a statement, a dialogue between two zennists, or, often, a question.  Its purpose—no matter the form—is to induce "great doubt" or "don't know mind" in the practitioner, so it's primarily a practice , though it's sometimes used to test a student's "progress" on the path of awakening.) "Joshu's Dog" (design by C.S.) The koan "Joshu's Dog" goes something like this: Someone asked Joshu,"Does a dog