I was always in trouble for chatting. My school reports all used to say, 'Donna is a very bright girl, but she must stop talking in class.' In the end, I made a career out of it.

My dad was a mechanical engineer and a drummer. We had no money, but I never felt we had no money, and that's what I remember now, having my own child. I think, 'Oh so what?' Kids don't go around the house seeing what's wrong with it.

I've always earned my own money and enjoy being independent. It's how I was brought up.

I've always embraced everything and been open-minded about what's ahead.

We make two mistakes about the ancient world. One is to assume they were better than us - that, for instance, the ancient Olympics didn't involve money-making. The opposite mistake, and just as common, is to think our Olympics are much more civilised than ancient sporting competitions. Neither is true.

The Federal Reserve ranks among the most transparent central banks. We publish a summary of our balance sheet every week. Our financial statements are audited annually by an outside auditor and made public. Every security we hold is listed on the website of the Federal Reserve Bank of New York.

Great wealth could make an enormous difference over the next decade if they sensibly support the scientific elite. Just the elite. Because the elite makes most of the progress. You should worry about people who produce really novel inventions, not pedantic hacks.

Credits in your PayPal account are really just USD-backed - they are not a unique currency themselves. Other 'digital currencies,' such as Facebook Credits, can be created out of nothing and without limit, so they are not serious money.