Download or read book Profiles in Courage written by Eli Granger and published by AuthorHouse. This book was released on 2007 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book lays out the evolutionary, historical and scientific evidence that a psychological immune system exists and details how this system functions and the impact it has had on our personal, social and national life. It shows ways that it can be helpful in our attempt to identify and handle the threats and dangers that face us just as our biological immune system does. And, like our biological immune system, it has the potential to be both beneficial and lethal.