The biggest obstacle to wealth is fear. People are afraid to think big, but if you think small, you'll only achieve small things.

You must acquire the habits and skills of managing a small amount of money before you can have a large amount. Remember, we are creatures of habit and, therefore, the habit of managing your money is more important than the amount.

For the rich, it's not about getting more stuff. It's about having the freedom to make almost any decision you want.

Now more than ever is the time to really work on learning a money management system that can work, no matter how low things seem right now.

People think I appear on television to promote my image. That's not fair. I hate filming. I turned down 'Strictly Come Dancing.' But television is a wonderful opportunity to promote scientific ideas. 'Super Doctors' is a very thoughtful piece.

When I was 20, I was living in the Alps, snowboarding and studying political science. I blew out my knee, and I began to realize my days in the sport were numbered; the reality was I would never be a pro.

Though I believe in God, I don't believe in religion for everybody. Some people who are a little weak and don't want to shoulder any responsibility need Catholicism. For people at the other extreme, there is Christian Science... I think a powerful conscience is worth all the religions put together.

Much of Indian science seems intuitive and not bound by the rigid thinking of classical scientists.