We should remember that just as a positive outlook on life can promote good health, so can everyday acts of kindness.

From the theft of confidential cables to 21st century protest movements, to development breakthroughs that have the potential to change millions of lives, we are all in uncharted territory.

We do have the nuclear weapons agreement with Iran, that's an enforcement consequence, action for action, follow on. We have a plan, we will watch them, we will be vigilant.

Every presidential candidate for decades has released his tax returns, and I've released 33 years of my tax returns. The American people deserve to know about our taxes. And so Donald Trump is standing in the way of precedent that goes back on both sides of aisle Democrats and Republicans, and he clearly has something that he doesn't want us to see.

Donald Trump would end up raising taxes on middle-class families.

Dignity does not come from avenging insults, especially from violence that can never be justified. It comes from taking responsibility and advancing our common humanity.

There are different views about what's good for our country, our economy, and our leadership in the world.