Here is some more about him. He studied Jujitsu back in the day. He also believed that most people stop themselves from being naturally powerful. Here are some more stories. There is a book too but it's $70 on Amazon so I'm going to wait until Hannukkah.
Butterfly Strong: A blog about internal martial arts, theatricality and Daoist ritual emptiness
Watch the Video: A Cultural History of Tai Chi
Oakland Workshops: Soja Martial Arts, Aug. 26, 27, 28