This martial arts manual describes his research into the how and why of Jeet Kune Do techniques. Bruce Lee wrote of "three stages of cultivation" that lie along the path to JKD mastery:

• The Stage of Innocence--this is the level of the absolute beginner.
• The Stage of Art--the student is immersed in the process of technical and physical training.
• The Stage of Artlessness--the stage of "highest art" in which the body is no longer hindered by the mind. As Bruce Lee would say,...