The only big ideas I've ever had came from daydreaming, but modern life keeps people from daydreaming. Every moment of the day your mind is being occupied, controlled by someone else - at school, at work, watching television. Getting away from all that is really important. You need to just kick back in a chair and let your mind daydream.

Your grandchildren will likely find it incredible - or even sinful - that you burned up a gallon of gasoline to fetch a pack of cigarettes!

The surviving intelligent life form on Earth is not going to be carbon-based; it's going to be silicon-based.

Anyone who's not interested in model airplanes must have a screw loose somewhere.

Suddenly, we humans - a recently arrived species, no longer subject to the checks and balances inherent in nature - have grown in population, technology and intelligence to a position of terrible power.

We're short on wisdom; we're high on technology. Where's it going to lead?

The only dumb question is the question you don't ask.