For me, as a scientist, the journey to here has been one of trying to dream big dreams. But one of the things that I realized, when you do this, is that a lot of times — and this is not just true for scientists, probably true in any area — that when you try to dream dreams that can help change the world, and help people, and think about things like this, that a lot of times people will tell you that your idea is impossible. Your invention is impossible, it could never work. But I think that’s very rarely true. I think if you really believe in yourself, if you’re persistent and work hard, that there’s very little that’s truly impossible.