Jean Liedloff, an American writer, spent two and a half years in the South American jungle living with Stone Age Indians. The experience demolished her Western preconceptions of how we should live and led her to a radically different view of what human nature really is. She offers a new understanding of how we have lost much of our natural well-being and shows us practical ways to regain it for our children and for ourselves. Jean Liedloff practiced and taught psychotherapy based on her book the Continuum Concept . She lectured in many countries where her views earned a substantial following and she was also a founding member of The Ecologist magazine. You can learn more about Liedloff and her work at Continuum-Concept.org. Great product!