J.M. Barrie, author of Peter Pan, gave a famous commencement speech on courage in 1922 that was recently republished in book form (Forgotten Books, 2010). Download the free e-book here.
This Facebook page has a story about a Wall of Courage created by students in an elementary school, to honor people who served in the military.
The Dictionary of Unitarian and Universalist Biography has the stories of dozens of our faith ancestors, many of whom exhibited great courage in living their faith.