And you understand some things better than other things, and because of that there's a continual jostling and give and take, which is politics.

But in that city, that tortured city, where you see the three faiths jostling so uneasily together, you also become aware of the profound connection between them.

And something about that environment and I've started calling it the liquid network, where you have lots of different ideas that are together, different backgrounds, different interests, jostling with each other, bouncing off each other that environment is, in fact, the environment that leads to innovation.