Letters to Sam: A Grandfather's Lessons on Love, Loss, and the Gifts of Life
by Daniel Gottlieb
I have read it again and again. It gives me much to think about.
http://www.amazon.com/Letters-Sam-Grandfathers-Lessons-Gifts/dp/1402753454/ref=sr_1_1?s=books&ie=UTF8&qid=1290289365&sr=1-1