I’ve been devoting a lot of my time in the last five years to musical theater. It’s been my new passion. I’d love to write a musical comedy about Eleanor of Aquitaine and the troubadours. I’ve always thought that would make a wonderful musical, about a troubadour who falls in love with a beautiful queen.

Thanks for asking, this is a bit of a cool side project for me. The main thing that motivated me to start it was just a general feeling that I had more than I needed and that I should give back. I donate money through a charitable foundation (rather than just through personal checks) in the hope that it will inspire others to consider supporting causes that they believe in.

My original idea for this film was to make a documentary, because I loved the real people who told me their stories.

Poetry is more important to me, and if I was forced to choose, it’d be poetry. I often write essays when I’m unable to write a poem, but I also enjoy writing essays, so I don’t suffer while writing them.

I married her because she is smart!

This light is shining on you. Do you know that it's pushing you?…Most people don't. But it is, because it's got energy. The only thing is, it's so small you don't feel it.

I invented optical levitation.

I was very shy, but I knew that this lady was special,…So I had enough nerve to ask for her phone number.

I didn’t realise I’m the oldest ever! So I just about made it, huh? Because you can’t be dead and win … If you’re a winner of the National Inventors Hall of Fame you can be dead. I won that prize a couple of years ago and I was very proud of that. That is the most, I would say, most important prize I’ve won.

Wonder Why would say, 'Why is the sky blue?'…Then Wonder Why would tell you. I was fascinated, because I wanted to know how things worked ... that was my introduction to science.