" What I am not proud of is our increasing resistance to competing ideas, right here at home in our politics, in media, and on campuses. So how do we solve it? We need leaders who—while holding their own opinions—tolerate others’, because they recognize that iron sharpens iron ideologically; that diversity in all forms is where our strength and unity are to be found. "

― Arthur C. Brooks , Love Your Enemies: How Decent People Can Save America from the Culture of Contempt