Dear Patrick, For five years I have been witness to your struggles to grow up without a father. As a family friend, I can't make that up to you. What I can do is stand by you, and teach you how to be the kind of man you wish your father had been ... So begins the correspondence of two unlikely friends, Patrick Buckley, a sixteen-year-old New York City high schooler, and Jeffrey M. Schwartz, internationally renowned neuroscientist and...