From the reviews: Defending Life is one of the serious efforts to understand the science of immunology theoretically ... . This book is not only an important contribution towards understanding the restrictions under which immunology now functions, but it provocatively suggests how the discipline might reorient itself to address more effectively not only the molecular mechanisms of immune reactions, but also their regulations and organization. ... a propitious step towards the full adoption of immunology by philosophy of biology as a member in good standing. (Alfred I. Tauber, Perspectives in Biology and Medicine, Vol. 51 (2), 2008)