As the world's largest economy and second-largest carbon emitter, as a country with unsurpassed ability to drive innovation and scientific breakthroughs, as the country that people around the world continue to look to in times of crisis, we've got a vital role to play. We can't stand on the sidelines. We've got a unique responsibility.

There's no doubt that when it comes to our treatment of Native Americans as well as other persons of color in this country, we've got some very sad and difficult things to account for. I personally would want to see our tragic history, or the tragic elements of our history, acknowledged. I consistently believe that when it comes to whether it's Native Americans or African-American issues or reparations, the most important thing for the U.S. government to do is not just offer words, but offer deeds.

The American people are both anxious for change. We're in a time of flux.

By the end of this decade, a majority of our Navy and Air Force fleets will be based out of the Pacific, because the United States is and always will be a Pacific power.

If you're a strong man, you should not feel threatened by strong women.

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.

In sectors like energy, I haven't been arguing for more spending per se; I've been arguing that it doesn't make sense for us to spend $4 billion subsidizing an oil industry that's mature and very profitable. We should be using that money to finance clean energy of the future.