When you see a Donald Trump and a Bernie Sanders, very unconventional candidates, have considerable success, then obviously there's something there that's being tapped into; a suspicion on globalization, a desire to reign in it's excesses, a suspicion of elites and governing institutions that people feel may not be responsive to their immediate needs. And that sometimes gets wrapped up in issues of ethnic identify or religious identity or cultural identity, and that can be a volatile mix.

What makes [cyber security] difficult is because it's not just a government problem. It is a private sector and government problem. And there's gotta be a lot more cooperation.

Heaven forbid we've got a problem where we could have prevented a terrorist attack or apprehended someone who is engaged in dangerous activity, but we didn't do so simply because of inaction in the Senate.

Today, more than ever before, science holds the key to our survival as a planet and our security and prosperity as a nation. It's time we once again put science at the top of our agenda and work to restore America's place as the world leader in science and technology.

If Iran cheats, the world will know it.

I am a firm believer that you don't do anything significant by yourself. Again, maybe there are exceptions. There's the Picasso or the Mozart.

In reaffirming the greatness of our nation, we understand that greatness is never a given. It must be earned. Our journey has never been one of shortcuts or settling for less. It has not been the path for the faint-hearted, for those who prefer leisure over work, or seek only the pleasures of riches and fame. Rather, it has been the risk-takers, the doers, the makers of things -- some celebrated, but more often men and women obscure in their labor -- who have carried us up the long, rugged path towards prosperity and freedom.