I do think that it's really important for leaders of countries to be very clear and careful in the statements they make because their words are weighed extremely carefully by other countries, and you have to create a continuity of seriousness and of credibility in order to be able to be taken seriously and get things done.

What we do right now, today, matters.

We should not allow a tiny minority of shoddy scientists and science and extreme ideologues to compete with scientific facts.

I think that for many of us, the years of the Civil Rights movements - Martin Luther King, Bobby Kennedy running for president in 1968 to end the war and so forth - these were defining moment in terms of trying to hold government accountable and have a level of responsibility and truth-telling.

Folks, Sarah Palin said she could see Russia from Alaska. Mitt Romney talks like he's only seen Russia by watching 'Rocky IV.'

You don't value families if you force them to take up a collection to buy body armor for a son or daughter in the service.

I'm going to be honest with you - I don't know a lot about Cuba's healthcare system. Is it a government-run system?