The central concern of this book is us human beings. The authors? basic question is: ?How is it that we can live in mutual care, have ethical concerns, and at the same time deny all that through the rational justification of aggression The authors answer this basic question indirectly by providing a look into the fundaments of our biological constitution, concentrating on what they term the emotioning, the preferences of living that guide the flow of the systemic conservation through systemic reproduction of the manner of living conserved. Humberto Maturana is renowned for developing the theory of autopoesis. He was founder-director of the Laboratory for Experimental Epistemology and the Biology of Cognition at the University of Chile in Santiago.