The Europeans who saw their regimes change were not necessarily less wise than we are. I'd be tempted to say they're wiser, in fact.

I think we have a lot of good attributes in our society, in our political system, but also we've been lucky a lot of the time.

It's important to be humble and to realise that past success is no guarantee of future returns.

We think that because we're America, everything will work itself out.