I think America is really well-positioned, because we do train people to be creative and sometimes resist authority, which helps in being an innovator. I think you're going to see for the next phase of the revolution all sorts of wonderful ways of connecting art and literature and journalism into new forms of digital expression.

Physics should represent a reality in time and space, free from spooky action at a distance.

We relate to Leonardo da Vinci because his genius was just being passionately curious about everything. He wanted to know everything he could know about our universe, including how we fit into it. We can't all have a superhuman intellect like Albert Einstein's, but we can be super-curious. And we can also quit smashing curiosity out of the hands our children.

What Einstein was able to do was - to use a cliche - think out of the box.

Simply handing over your iPod to a friend, your blind date, or the total stranger sitting next to you on the plane opens you up like a book." (Steven Levy)

Leonardo da Vinci had such a playful curiosity. If you read his notebooks, you'll see he's curious about what the tongue of a woodpecker looks like, but also why the sky is blue, or how an emotion forms on somebody's lips. He understood the beauty of everything. I've admired Leonardo my whole life, both as a kid who loved engineering - he was one of the coolest engineers in history - and then as a college student, when I travelled to see his notebooks and paintings.

I think Leonardo da Vinci teaches us the value of both being focused on things that fascinate us but also, at times, being distracted and deciding to pursue some shiny new idea that you happen to stumble upon. Balancing intense focus with being interested in a whole lot of different things is something that we have to do in the Internet age.