We remain a young nation, but in the words of Scripture, the time has come to set aside childish things. The time has come to reaffirm our enduring spirit; to choose our better history; to carry forward that precious gift, that noble idea, passed on from generation to generation: the God-given promise that all are equal, all are free, and all deserve a chance to pursue their full measure of happiness.

I still don't feel responsible for what Donald Trump says or does. But I do feel a responsibility as president of the United States to make sure that I facilitate a good transition and I present to him as well, as the American people my best thinking, my best ideas about how you move the country forward. To speak out with respect to areas where I think the Republican party's wrong, but to pledge to work with them on those things that I think will advance the causes of security and prosperity and justice and inclusiveness in America.

Here's the truth: the Soviet Union had thousands of nuclear weapons, and Iran doesn't have a single one. But when the world was on the brink of nuclear holocaust, Kennedy talked to Khrushchev and he got those missiles out of Cuba. Why shouldn't we have the same courage and the confidence to talk to our enemies? That's what strong countries do, that's what strong presidents do, that's what I'll do when I'm president of the United States of America.

I've always viewed the Paris Agreement as a starting point. If you look at all the commitments that have been made by all the countries, it's still not sufficient to deal with the very dangerous situation we face. What it has done is that it created an architecture whereby as technology improves, as we find new clean sources of energy, as we make our economies more efficient, then gradually we can turn up the dial and improve the outcomes of Paris.

One of the things I think we have to do is make sure that college is affordable for every young person in America. And I also think that we're going to have to rebuild our infrastructure, which is falling behind, our roads, our bridges, but also broadband lines that reach into rural communities. So there are some things that we've got to do structurally to make sure that we can compete in this global economy. We can't shortchange those things. We've got to eliminate programs that don't work, and we've got to make sure that the programs that we do have are more efficient and cost less.

While we may not live to see the full realization of our ambition, we will have the satisfaction of knowing that the world we leave to our children will be better off for what we did.

They assert that their program is purely peaceful. . . . We want them to demonstrate clearly in the actions they propose that they have truly abandoned any nuclear weapons ambition.