I remember as a boy when the conversation on civil rights was won in the South. I remember a time when one of my friends made a racist joke and another said, 'Hey man, we don't go for that anymore.'

When you have the facts on your side, argue the facts. When you have the law on your side, argue the law. When you have neither, holler.

American democracy is in grave danger from the changes in the environment in which ideas either live and spread or wither and die.

The science linking the increased frequency and severity of extreme weather to the climate crisis has matured tremendously in the last couple of years.

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.

I have a sense of mission on this climate crisis, and I'm trying to pour all the energy I have into it. And I hope that I, along with others, can catalyze the emergence of real solutions to the climate crisis. I think we're making a lot of progress. I think we're going to win this, but it matters how quickly we win it. So I'm focused on that.

The golden thread of reason that used to be stretched taut to mark the boundary between the known and the unknown is now routinely disrespected.