Economics is everywhere, and understanding economics can help you make better decisions and lead a happier life.

The iPhone is made on a global scale, and it blends computers, the Internet, communications, and artificial intelligence in one blockbuster, game-changing innovation. It reflects so many of the things that our contemporary world is good at - indeed, great at.

Economics evolved as a more moral and more egalitarian approach to policy than prevailed in its surrounding milieu. Let's cherish and extend that heritage. The real contributions of economics to human welfare might turn out to be very different from what most people - even most economists - expect.

In the early stages of negotiation software, on your smartphone, there may be programs that listen to the pitch of a voice, or that test for stress. You'll just ask the program, 'Was he lying? Was he eager to do business with me?' Maybe the computer will be right sixty per cent of the time.

What I would like to vote for is a candidate that is socially liberal, a fiscal conservative, broadly libertarian with a small 'l' but sensible and pragmatic and with a chance of winning. That's more or less the empty set.

I'm not a vegetarian. But I think people who are vegetarians, they are actually more virtuous than the rest of us. I think they should be admired.