The walls between old allies on either side of the Atlantic cannot stand. The walls between the countries with the most and those with the least cannot stand. The walls between races and tribes; natives and immigrants; Christian and Muslim and Jew cannot stand. These now are the walls we must tear down. We know they have fallen before.

I don't have a philosophical objection, necessarily, to a travel ban if that is the thing that is going to keep the American people safe.

Despite all the noise and hullabaloo - military cooperation, intelligence cooperation, all of that has continued. We have defended them consistently in every imaginable way. But I also believe that both for our national interests and Israel's national interests that allowing an ongoing conflict between Israelis and Palestinians that could get worse and worse over time is a problem. And that settlements contribute.

Chancellor [Angela] Merkel is perhaps the only leader left among our closest allies that was there when I arrived. So in some ways we are now the veterans of many challenges over the last eight years.

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?

Nothing can stand in the way of the power of millions of voices calling for change.

America is an unlikely place - a country built on defiance of the odds; on a belief in the impossible. And I remind you of this because as you set out to live your own stories of success and achievement, it's now your turn to help keep it this way.