To express his pioneering views about the brain and human consciousness, Ilchi Lee has authored a total of 32 books. Among the books he has authored is his most recent one, Earth Citizen: Recovering Our Humanity, as well as Brain Wave Vibration: Getting Back into the Rhythm of a Happy, Healthy Life (Gold Medal Winner in the Living Now Book Awards), In Full Bloom: A Brain Education Guide for Successful Aging (with Jessie Jones, Ph.D.), Principles of Brain Management: A Practical Approach to Making the Most of Your Brain, Know Your Brain, Know Happiness (with Dr. Hee-Sup Shin), Healing Society: A Prescription for Global Enlightenment, and Human Technology: A Toolkit for Authentic Living.

To reach people around the world, many of his books have been translated into different languages, especially English and Japanese. Brain Respiration has been translated the most; it exists in eight different languages. Other popular books such as Human Technology and Healing Society can be found in five different languages, including English and Korean. Brain Wave Vibration will soon be published in seven, including Russian, German, Japanese, French, and Chinese (Taiwan).