Life Energy Encyclopedia: Qi, Prana, Spirit, and Other Life Forces Around the World

Stefan Stenudd is a Swedish author and historian of ideas, who researches the thought patterns of myth in general and creation myths in particular. He has written a book about the cosmological and mythological ideas of the Greek philosophers, and one about the Chinese life energy Qi. He has also written bestseller books about the peaceful martial art aikido. He has practiced that art for more than 40 years. Aikido, too, evolved from ideas of a life energy.