The definition of who's literate and who's not keeps changing. So, in Neanderthal times, if you painted on a cave wall, that was enough to transmit how you hunt, how you eat, how you cook, how you dress, and we can read about that.

It's important to begin to even consider whether countries can become something that looks very different because people tend to take their countries for granted.

The U.S. started with no stars. In fact, it started with a completely different flag. The last two were added in 1959, Hawaii and Alaska.

Three-quarters of the flags, borders and anthems sitting at the U.N. today were not there 60 some-odd years ago.

Borlaug would be one figure that I think fundamentally changed India, China, all of Southeast Asia, and gave them the time to be able to build on other things.

If I had a wand and could put statues in different places, one of the statues would go to a man who just died, called Norman Borlaug, who came up with the Green Revolution.

One of the lessons that I hope people will take out is the extreme dependence simply on the financial sector is really dangerous.