Find some fun way to get a little more oil on your hands or mud on your boots. Sometimes, that's what it takes to take down some of the really big problems.

I'm a father to four kids, so it bothers me that even though our children think big naturally, our society systematically trains them out of thinking that way.

The moonshot for Google Glass is to harmonize the physical and digital worlds. It is specifically to find a way to help people be naturally, elegantly situated, physical and digitally, at the same time.

If you don't have a tonne of optimism, you're not going to make it... you won't be able to evangelise to everyone else. On the other hand, if you aren't constantly paranoid about what can go wrong and put plans in place, then you're going to get bitten at some point.

Google is already overflowing with incredibly creative bright groups already working on lots of the software problems of the world.

If you want to explore things you haven't explored, having people who look just like you and think just like you is not the best way.