As a result of several long-building, polarizing trends in American politics and culture, we have lost the ability to execute even the basic functions of government, much less solve the most difficult and divisive problems facing the country. … Those who think that they alone have the right answers, those who demonize those who think differently, and those who refuse to listen and take other points of view into account — these leaders, in my view, are a danger to the American people and to the future of our republic.