Kenji Tokitsu has doctorates in sociology and in Japanese civilization. Born in Japan, he began studying martial arts as a child. In 1971 he moved to France and began teaching karate. He founded the Shaolin-mon Karate-do school in Paris in 1983 and the Tokitsu-ryu Academy in 2001. The author of Miyamoto Musashi: His Life and Writings and Ki and the Way of the Martial Arts, he lives in France.Roger Halfon, M.D., is a physician, psychiatrist, homeopath, auriculotherapist, and herbalist. He has published numerous books on health in French, including Guide pratique des fleurs de Bach [Practical Guide to Bach Flowers], Comment renforcer ses d�fenses immunitaires [How to Strengthen Your Immune… System Defenses], and Migraines et acouph�nes enfin trait�es [Finally a Treatment for Migraines and Tinnitis]. He lives in France.