C. Alexander Simpkins, PhD, is a psychologist specializing in meditation, hypnotherapy, and neuroscience. Simpkin is coauthor of twenty-seven books, including a number of titles on Taoism: Simple Taoism, Tao in Ten, and most recently, The Dao of Neuroscience. Simpkin regularly present seminars on meditation, hypnosis, and neuroscience worldwide to professionals and the public, and has performed research on therapeutic effectiveness using unconscious methods. Simpkin resides in San Diego, California.