First and foremost, we need to go and destroy ISIS. And we need to do this with our Arab friends and our friends in Europe.

The best way to build anything is to build it together and build it with diversity, because then you really get good ideas about how to be strong. And you need a strong foundation, which brings about the notion that all of us in the neighborhoods, I still consider myself to be one of them.

For heaven's sake, this is 2015. I've run the largest technology company in the world. Let me assure you we know how to build an employer verification system that would work. We can solve this. We just need to do it.

A great power has to have the discipline not only to go when necessary but to know when not to go. Getting involved in ethnic, religious civil wars is a recipe for disaster.

I don't look at polls, I pay no attention to them. I pay attention to the public, and the sense of where the public is on certain things, but you have to lead.

A leader has a sound program, has a good policy, and then brings people together to solve problems.

You know, whatever it takes. It's very important obviously from an economic point of view because of the need for innovation, for progress, to improve the standard of living of people. But I also think it's a critical issue in geopolitics too.