Climate change is one of the issues I worry most about because its impacts are enormous. But they're gradual, they're not immediate.

Insurance companies, drug companies are going to have to be ponying up, partly because right now they're receiving huge subsidies.

We can lose so much of what we've gained in terms of the kind of democratic freedoms and market-based economies and prosperity that we've come to take for granted.

Maybe you could be a great writer - maybe even good enough to write a book or articles in a newspaper - but you might not know it until you write that English paper - that English class paper that's assigned to you.

[A]lthough the principle of equality has always been self-evident, it has never been self-executing.

You have social media and the Internet and immigration and so, suddenly, cultures are clashing and people feel as if they're less familiar with the people around them. That causes social anxieties.

That just gives sort of the democracy an opportunity to test ideas, for those who lost to catch their breath, regain energy, re-energize themselves and then get back in the arena, and then we'll make some more progress in the future.