Insights into the physical, emotional, and spiritual connections of these organs are of great importance for personal life management: indications of diseases, as well as opportunities to restore harmony to processes that have gone out of balance. Dr. med. Walter Holtzapfel (1912 - 1994) succeeds in presenting the essential characteristics of the organs, which are summarized in the chapter headings as follows: - The liver provides the courage to act; - The lungs provide the firmness of thought; - The kidneys provide the vigor of temperament; - The heart provides inner stability.