I think there's no higher calling in terms of a career than public service, which is a chance to make a difference in people's lives and improve the world.

If you believe you can make a difference, not just in politics, in public service, in advocacy around all these important issues, then you have to be prepared to accept that you are not going to get 100 percent approval.

We can make a difference. We can save lives. We can stop the genocide.

I just don't believe in the basic concept that someone should make their whole career in public service.

I could make a difference.

Make a difference about something other than yourselves.