Even if we can solve the carbon problem for coal, it is still a non-renewable resource. At some point, coal supplies will drop.

...we're going to be in an economic slowdown for a couple of years. So to take three months, four months, six months to spend this money the right way-we're not going to get a chance to spend a trillion dollars again! Ever. So let's do it the right way.

If you want to understand what's going to happen, you can't look in the rearview mirror into the United States' history, because that's done now. You have to look out at the rest of the world and look at the history of the rest of the world, and what you'll see is demonstrations and counter-demonstrations are going to become the norm. We'll have a big march, then they'll have a big march, we'll have a big rally and they'll have a big rally. That will be one of the features. Again, a pro-regime and pro-opposition media system, that will become a feature.

Most green-collar jobs are middle-skill jobs. That means they require more education that a high-school diploma, but less than a four-year degree.

If we do nothing, the ensuing climate catastrophe will wreck our economy - including wreaking havoc on our food production systems. All credible scientists agree on this point.

The Trump phenomenon has a lot of really good stuff in it, the anti-elitism, the concern for America's economy in the Rust Belt, the desire to see better days for the country. That's all great stuff. Some of that stuff is Bernie Sanders stuff. The problem is that it's marbled through with xenophobia and misogyny and bigotry.

If the road to social transformation can be paved only by saints who never make mistakes, the road will NEVER be built.