We must address, individually and collectively, moral and ethical issues raised by cutting-edge research in artificial intelligence and biotechnology, which will enable significant life extension, designer babies, and memory extraction.

For centuries, economic thinkers, from Adam Smith to John Maynard Keynes, have tried to identify the elusive formula that makes some countries more prosperous and successful than others. My curiosity about this topic spurred me, as a young professor of economics in the late 1970s, to research new ways of measuring national competitiveness.

It was a hallmark of Nelson Mandela's leadership that being open to change made him appear not weaker, but even stronger.

I am a great enthusiast and early adopter of technology, but sometimes I wonder whether the inexorable integration of technology in our lives could diminish some of our quintessential human capacities, such as compassion and cooperation.

Whenever I'm asked about the greatest lesson I've learned, my response is, 'Happiness is a choice I make.'

I'd say most of my songs I write from personal experience. When I feel like I don't have any inspiration in my personal life, I think about others that are close to me and maybe what they're going through or even just people I've come across, acquaintances.

I learned a lot more about transgender people. It's not a choice, but a physiological condition that has to do with the size of the hypothalamus part of the brain.

People make me key chains... someone attached a Dauntless symbol to a silver pen. That one is what I use to sign books. I use that a lot. I like to keep them around because they remind me that people are waiting for these books and that they really love them. It gives me motivation in those times when I'm not feeling very motivated.