The brilliant versatility of Professor Lievegoed, who has addressed the issues of human and humanity education both as a doctor and as an anthroposophist, is evident in this thorough and foundational work on the physiological and psychological development of the child and young person in the first three seven-year periods. His perspective, shaped by the spiritual science of Rudolf Steiner, goes far beyond conventional research findings. In his introduction, Lievegoed states, among other things: This work assumes that within the human physical and spiritual life development, both a genetic potential and a biographical influence are at play. The latter reveals itself within consciousness as the self (our deepest essence). Contents include: The three developmental periods, the physical development.