By Stefan Stenudd
Stefan Stenudd
About me
I'm a Swedish writer and aikido instructor. In addition to fiction, I've written several books about lifeforce concepts and East Asian traditions. I'm also a historian of ideas, researching creation myths. My personal website:

Life Energy
The life energy exists in many traditions, such as qi (chi) in China, prana in India, pneuma in Ancient Greece, spiritus in Latin, and vitalism in philosophy. Here they are all explained.

Life Energy Fundamentals

Life Energy Beliefs A - Z


Life Energy Encyclopedia


Books by Stefan Stenudd:

Cosmos of the Ancients, by Stefan Stenudd.

The Greek philosophers and what they thought about cosmology, myth, and the gods, by Stefan Stenudd. Click the image to see the book at Amazon.

Tao Te Ching - The Taoism of Lao Tzu Explained, by Stefan Stenudd.

The Taoism of Lao Tzu Explained. The great Chinese classic, translated and extensively commented by Stefan Stenudd. Click the image to see the book at Amazon.

Other Websites:

Qi energy

The ancient Chinese life energy qi (chi) explained and how to exercise it. Click the image to visit.


Taoism, the old Chinese philosophy of life, based on Tao, the Way. Click the image to visit.

Creation Myths

Creation stories from around the world, and the ancient cosmology they reveal. Click the image to visit.

Life energy fundamentals

Life Energy Fundamentals

Introduction to Human Thought on Life Force and the Spirit

The following webpages present ideas and beliefs about a life energy, and what might have inspired them. The life force or life spirit is a concept found all around the world - from the most distant past we're able to study, up to the present. There are differences in these beliefs, but many striking similarities as well. The fundamental question is how these beliefs have emerged.


  1. Introduction
  2. Homo rudis
  3. Prime mover
  4. Air
  5. Bodily fluids
  6. Survival
  7. The dead
  8. Spirits
  9. Hell
  10. Change
  11. Agricultural order
  12. A demanding spirit
  13. Magic
  14. The Scientific Revolution
  15. Mechanical man
  16. Subversive spirits
  17. Alien forces
  18. Future speculations


I have written two books on the subject of life energy: Qi: Increase your Life energy and Life Energy Encyclopedia. This website has material from the latter. Here are the two books:

Life Energy Encyclopedia, by Stefan Stenudd.
Life Energy Encyclopedia

Qi, prana, spirit, ruach, pneuma, and many other life forces around the world explained and compared, by Stefan Stenudd. Click the image to see the book at Amazon.

QI - increase your life energy, by Stefan Stenudd.
Qi - Increase your life energy

The life energy qi (also chi or ki) explained, with several very easy exercises to awaken, increase, and use it, by Stefan Stenudd. Click the image to see the book at Amazon.

Stefan Stenudd