Team of Rivals is a lengthy but entertaining book about the life and political career of Abraham Lincoln. In the work that I do as a social entrepreneur, I found author Doris Kearns Goodwin's focus on the formation of his character and his nature as a leader to be insightful and instructive. It's often hard, especially in the work of social enterprises, to remember how to love the world.
Lincoln, though ridiculed throughout his life not only for his looks but for his beliefs, managed to turn his greatest adversaries into his closest allies, from his presidential rivals during the election who became the members of his cabinet, to the entire South which he enveloped back into a nation that didn't punish them for straying into civil war but welcomed them back with open arms.
For a magnanimous leader, there is no greater example than Lincoln's. I would recommend this book to anyone looking for insight on how to make big changes from within complex and divisive systems.