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.

Social media and I have had a very tumultuous relationship.

Especially today, with the Internet, you have people who have best friends that they never met, with Facebook and Twitter and stuff. If you're really friends, it doesn't matter if I'm on the other side of the world. We'll still be friends and find a way to connect.

The best records are not perfect. They don't sound digital or like someone applied rules.

I work with kids every day, and I preach to them how much more they make and how much easier it is to get a job when they get a college education.