An exploration of the cosmic origins of human beings and the evolutionary laws which govern their development. Armin Husemann applies musical principles as a method of gaining insight into the structure of the human body and the forces that work on it. He draws on our experience of music and explain the physiological and anatomical relationships in the body, as well as illuminating the spiritual influences which determine physical development. Drawing on artistic exercises set out by Rudolf Steiner to develop a better understanding of these influences, the book explores the cosmic origins of human beings and the evolutionary laws which govern their development.