"Gnana Yoga Lesson Series: The Yoga of Wisdom" is a collection of practical information and detailed instructions from the famous writer and researcher of the art of spiritual self-improvement, William Walker Atkinson. In this book, he invites readers to study the philosophy and practice of Gnana Yoga - the yoga of wisdom aimed at achieving inner consciousness and understanding of the universe. The author explains in detail the basic principles of yoga, methods of self-improvement, and also provides readers with practical tasks and exercises for the development of spiritual abilities. This book is an indispensable resource for those who seek a deeper understanding of themselves, the world, and the nature of human existence."