I don't live my life thinking about "if only." I just try to think positively about the future. We'll never know for certain what would have happened if we'd gone to Iraq. The important thing is that we've got to do everything we can to prevent other wars.

My biggest motivation? Just to keep challenging myself. I see life almost like one long University education that I never had - everyday I'm learning something new.

I may be a businessman in that I set up and run companies for profit, but when I try to plan ahead and dream up new products and new companies, I'm an idealist.

Give your employees a mission that matches their ambitions. When you challenge people, they surprise you.

You must have the courage to trust your instincts and be ready to question what other people don't. If you do that, you can seize opportunities that others would miss. Believe in yourself, and use everything you can - including the obstacles - to propel you along the road to success. Who knows what you might achieve?

Money is a poor indicator of success.

Irreverence ran on both sides of our family...my parents brought me up to think we could all change the world.