Progressives should recognize common morality with religion.

We're still fighting to make sure that basic anti-discrimination laws are enforced, not just at the federal level, by the way, but throughout government and throughout the private sector? And those are fights that we can win because - and this is where I do believe America has changed - the majority, not by any means 100 percent, but the majority of Americans believe in the idea of nondiscrimination.

We're up against the conventional thinking that says your ability to lead as president comes from longevity in Washington or proximity to the White House. But we know that real leadership is about candor and judgment and the ability to rally Americans from all walks of life around a common purpose, a higher purpose.

Usually, I'm pretty good about sorting through the options and then making decisions that I'm confident are the best decisions in that moment, given the information we have. But there are times where I think I wish I could have imagined a different level of insight.

Honestly this is not going to change unless the people who want to prevent these kinds of mass shootings from taking place feel at least as passionate, at least as mobilized and well-funded as the NRA and the gun manufacturers are because the politics in Congress are such where even members of Congress who know better are fearful if they vote their conscience and support common sense measures like background checks, they're worried they're going to lose.

A good compromise, a good piece of legislation, is like a good sentence; or a good piece of music. Everybody can recognize it. They say, 'Huh. It works. It makes sense.'

It is moments like these that force us to try harder, and dig deeper, and to discover gifts we never knew we had - to find the greatness that lies within each of us.