[T]he scientific enterprise will never be completely free of mistakes. What is important is that the overwhelming consensus on global warming remains unchanged.

For a free country to continue thriving, there have to be regular reforms, because any society, any economy that stays in place, you're going to see repeated attempts to exploit the openings for twisting policy to the advantage of those who already have wealth and power.

America's political system has evolved over the last 50 years in ways that have enhanced the power of business lobbies.

A president who breaks the law is a threat to the very structure of our government.

There are many who would much prefer that the word 'climate' never be mentioned and that the issue be eliminated from our national conversation.

And just as the false assumption that we are not connected to the earth has led to the ecological crisis, so to the equally false assumption that we arenot connected to each other that has led to our social crisis.

You're going to see new processes that utilize waste as the source of energy, so there's no petroleum consumed in the process - that makes the energy balance uniformly positive.