What is human nature? How are body, soul, and spirit connected?In ten lively lectures, Rudolf Steiner throws light upon these age-old questions about ourselves. With the example of illnesses and their origin, Steiner traces the relationship between body, soul, and spirit. His vivid description of human growth and development opens up the spiritual dimension of our lives and finally leads to the beautiful picture of the earth as a living being to which we have a very special relationship.