By speeding the transition to cleaner energy, we can improve the lives of billions of people, while also reducing the risks we face from a changing climate.

Getting the job done has been the basis for the success my company has achieved.

You're going to see a million people here who have the courage to come and not let terrorists win, and that's exactly what we should all do.

When you go to Washington now, you can feel a sense of fear in the air - the fear to do anything, or say anything, that might affect the polls, or give the other side an advantage, or offend a special interest.

New York has been, and will continue to be, a magnet for people from all over the world. This is where the arts, business, research and technology converge to create the world's foremost urban economy.

Five years have come, and five years have gone, and still we stand together as one. We come back to this place to remember the heartbreaking anniversary - and each person who died here - those known and unknown to us, whose absence is always with us.

I think if you look at people, whether in business or government, who haven't had any moral compass, who've just changed to say whatever they thought the popular thing was, in the end they're losers.