The book "Human Aura: Astral Colors and Thought Formation" by the famous author William Walker Atkinson reveals the topic of auras and their meaning for humans. The author explores the astral colors that surround us and affect our emotional and physical state. The book reveals how thoughts shape the color energies in the aura and how they affect our lives. "Human Aura" is an important book for those interested in energy, psychology and spiritual development.