I spoke on the phone with President Rouhani of the Islamic Republic of Iran. The two of us discussed our ongoing efforts to reach an agreement over Iran's nuclear program. While there will surely be important obstacles to moving forward and success is by no means guaranteed, I believe we can reach a comprehensive solution.

We reward people a lot for being rich, for being famous, for being cute, for being thin... one of the values I think we need to instill in our country, in our children, is a sense of 'usefulness', in other words, are we useful, are we making other peoples' lives a little bit better?

If we choose to keep those tax breaks for millionaires and billionaires, if we choose to keep a tax break for corporate jet owners, if we choose to keep tax breaks for oil and gas companies that are making hundreds of billions of dollars, then that means we've got to cut some kids off from getting a college scholarship.

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What I want all of you to know is that we are going to bring those who killed our fellow Americans to justice.

We know the battle ahead will be long, but always remember that no matter what obstacles stand in our way, nothing can stand in the way of the power of millions of voices calling for change. We have been told we cannot do this by a chorus of cynics. They will only grow louder and more dissonant. We've been asked to pause for a reality check. We've been warned against offering the people of this nation false hope. But in the unlikely story that is America, there has never been anything false about hope.

This is not some distant problem of the future. This is a problem that is affecting Americans right now. Whether it means increased flooding, greater vulnerability to drought, more severe wildfires - all these things are having an impact on Americans as we speak.