Often when the country has been at odds with itself, a leader has come along to remind us of our common cause and our shared humanity.But now, with the country feeling more deeply divided than ever, is that just something for the history books?We talk with Pulitzer Prize-winning historian Doris Kearns Goodwin about whether the leaders of the past have something to teach us about facing the challenges of today.Want to support 1A? Give to your local public radio station and subscribe to our podcast. Have questions? Find us on Twitter @1a.