Some may still deny the overwhelming judgment of science, but none can avoid the devastating impact of raging fires, and crippling drought, and more powerful storms.

There was a time when if you had a financial crisis in Southeast Asia somewhere, it had no impact on our markets. Today it does.

Since taking office, I've made it clear that the United States was prepared to begin a new chapter of engagement with the Islamic Republic of Iran. We offered the Iranian government a clear choice. It could fulfill its international obligations and realize greater security, deeper economic and political integration with the world, and a better future for all Iranians. Or it could continue to flout its responsibilities and face even more pressure and isolation.

I think where I get frustrated at times was the belief that the president can do anything if he just decides he wants to do it.

Abraham Lincoln and Millard Fillmore had the same title. They were both presidents of the United States, but their tenure in office and their legacy could not be more different.

Keep exploring. Keep dreaming. Keep asking why. Don’t settle for what you already know. Never stop believing in the power of your ideas, your imagination, your hard work to change the world.

I think Dona;d Trump is sincere in wanting to be a successful president and moving this country forward and I don't think any president ever comes in saying to himself "I want to figure out how to make people angry or alienate half the country."