Imagine being able to make it difficult for an ISIS commander to talk to his fighters in the field just by placing a piece of malware on his computer network.

The good news is that because terrorist groups rely so heavily on the internet, it offers new avenues for the U.S. and its allies to fight them.

Potentially, the U.S. military has the ability to stop messages from being delivered or can alter commands without ISIS knowing.

It seemed like my parents were always trying to get me to care about money, but I didn’t, really. Then again, it's easy to say you don't care about money when you have plenty of it.

The good thing about science is that its true whether or not you believe in it

I have also figured out that for many people death is a difficult subject, not at all as simple as it is for me.

I read much more that I do anything else. I don't watch too much television, because I like books.

I like characters who don't change, who don't learn from their mistakes.

You are the stars and the world is watching you. By your presence, you send a message to every village, every city, every nation. A message of hope. A message of victory.

Torment yourself as little as possible, then you'll torment me less.

There's no such thing as enough.

The American challenge in leading the world is compounded by our Constitution.

No darkness lasts forever. And even there, there are stars.