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.

I've consistently said, we need to support charter schools. I think it is important to experiment, by looking at how we can reward excellence in the classroom.

But at the end of the day, the circumstances of your life what you look like, where you come from, how much money you have, what you've got going on at home that's no excuse ... Where you are right now doesn't have to determine where you'll end up. No one's written your destiny for you. Here in America, you write your own destiny. You make your own future.

Don't be afraid to ask questions. Don't be afraid to ask for help when you need it. I do that every day. Asking for help isn't a sign of weakness, it's a sign of strength. It shows you have the courage to admit when you don't know something, and to learn something new.

I think it is important that we are targeting HIV/AIDS resources into the communities where we're seeing the highest growth rates. That means education and prevention, particularly with young people.

Few challenges facing America and the world are more urgent than combating climate change. The science is beyond dispute and the facts are clear.

Making products we sell around the world, stamped with three proud words, 'Made in the USA!'