Ervin Laszlo, Ph.D., is a philosopher and systems scientist. He has published more than 75 books and over 400 articles and research papers. He lives in Tuscany. Pier Mario Biava, M.D., has been studying the relationship between cancer and cell differentiation for more than 3 decades. The author of over 100 scientific publications and 6 books, he works at the Institute of Research and Treatment in Milan.