Finally, the most important quality for our next leader at this juncture in our history: The new president must be a true unifier of Americans. The nation is divided over how to deal with challenges such as immigration, the quality of public education, economic inequality, our role abroad and more. Too many presidential candidates of all stripes are working overtime to deepen our divisions, to turn us against one another, to play to our fears. They are prepared to place all that holds us together as one people, as Americans, at risk for their own ambitions. The next president must lead in restoring civility to our political process. We must hope that the president we elect next year will again and again remind all Americans of our common destiny, and that our fate as a nation and as a people is bound up with one another. Our new leader should appeal, in President Abraham Lincoln’s words, to “the better angels of our nature.”