My administration doesn’t have any secrets, and from now on, neither will you.

Some people in D.C. talk about me like a dog.

Our journey is not complete until we find a better way to welcome the striving, hopeful immigrants who still see America as a land of opportunity, until bright young students and engineers are enlisted in our workforce rather than expelled from our country.

There are folks who will equivocate. They'll say, 'You know, I'm not a scientist.' Well, I'm not either. But the best scientists in the world know that climate change is happening.

It wasn't until about a year, year and a half in where I began to realize that the Pentagon and our national-security apparatus and the CIA were all getting too comfortable with the technology as a tool to fight terrorism, and not being mindful enough about how that technology is being used and the dangers of a form of warfare that is so detached from what is actually happening on the ground. And so we initiated this big process to try to get it in a box.

When times get tough, we don't give up. We get up.

I, more than anything, obviously the presidency is the people, and it's been interesting the emotions in the last few months. What you realize is that you may never have the team that is together in the same way, under the same pressures, and the attachments that you make to folks from your chief of staff down to.