1. Aristotle Nicomachean Ethics, 1.7. Irwin T (trans.).
2. Mayhem: Violence as Public Entertainment;Bok,1999
3. Health as a theoretical concept;Boorse;Philosophy of Science,1977
4. The WHO definition of “health”;Callahan;Hastings Center Studies,1973
5. What Price Better Health? Hazards of the Research Imperative;Callahan,2003