We cannot hope to change human nature. There will always be cranks and conspiracy theorists among us. But we can try to improve things - we don't have to accept the debasement of civil discourse or civic decline. We can take steps to ensure that the lunatic fringe remains on the fringe and stops bleeding into the base and then poisoning the mainstream

If you only take offense when the president of your party is compared to Hitler, then you're part of the problem.

I'm an independent. I'm a centrist. A new generation is arriving that has grown up with a multiplicity of choice in every aspect of their lives, and yet politics is the last place that they are told that they should be satisfied with a choice between brand A and brand B. It doesn't fit the way they think. It doesn't fit the way they live.

I believe that the far-right and the far-left can be equally insane - but there's no question that in the first years of the Obama administration, the far-right has been far crazier. In part, this comes from parties being out of power - without the responsibility of governing to ground them, the activists and the ideologues take over.

By pumping up hyper-partisanship, our country (America) is playing with forces that can easily get out of control. We are giving purpose and cover - and sometimes a sense of purpose - to the crazy among us. We are encouraging a culture of extremism

Politics follows the lines of physics: every action creates an equal and opposite reaction.

Our politics are being hijacked by a comparatively small number of people who seek to dominate the debate by screaming the loudest. They see the world as an urgent struggle between true believers and nonbelievers. They attempt to impose strict litmus tests and insist on conformity. They demonize dissent and consider all political opponents their enemies. Fear is their favourite tactic as they try to divide and conquer