I've always wanted to help build a better society and build a better company, and I always wanted a healthy, vibrant company, a healthy, vibrant society. We take care of our people, we provide them with opportunity. But I've always believed business is here to serve your clients, your shareholders, your communities. If we do this well, everyone benefits. We have to do a good job for all of them.

We did not anticipate the political fallout from it. We definitely didn't need it and we paid it back the first day we were allowed to.

A lot of these things have hurt the average American. When they look at the banks and they say, "Well, the bank's talking its own game," I am telling you, what we've done in mortgage lending, our inability to have proper regulations around mortgages, has hurt average Americans. First-time buyers, immigrant buyers, prior defaults, self-employed, because they can't get a mortgage. Will it make a big difference to JPMorgan Chase? No, but you're hurting my fellow citizens. Let's go at it, and let's fix it.

I've always been a ... believer in good regulation.

If the numbers are right, ICBC [Industrial & Commercial Bank of China], which already earns nearly twice as much as JPMorgan. They'll probably be going a lot faster over time, and one day they can be a lot bigger than us.

My guess is the big Chinese banks will be in 100 countries by then. They will have very sophisticated operations, and they may very well have bought banks around the world in countries that allow it. I mean, I don't think the American government would allow them to buy JPMorgan. But they will be able to buy a sizable big bank in the U.S. at some point. Whether they do or not, or if it's allowed or not, I don't know.

Because of that [Brexit], you're going to have slow growth and, unfortunately, while there may not be huge volatility, there will be volatility.