I put all my sighs in a lockbox

Where solar energy is concerned - and wind energy and battery storage and electric vehicles and efficiency technologies - that is what we are now seeing. So, yes, I'm very optimistic, but anyone who works on the climate crisis has an internal struggle between hope and despair. I won't deny that, but hope has always prevailed in my outlook.

Any child born into the hugely consumptionist way of life so common in the industrial world will have an impact that is, on average, many times more destructive than that of a child born in the developing world.

I'm not a psychologist, and I don't know how to play a more sophisticated role than the one that I have played for quite a few years, and that is spending a lot of time with these hard-working scientists in the various fields of expertise that relate to the climate crisis, learning as fully as I can the truths they are discovering, asking them to explain it in language that's simple enough for me to understand and then use that language to convey the essence of it, and then letting the chips fall where they may.

I pledge to you today that as president, in my first budget, I will introduce the largest increase in special education ever.

The ten hottest years in the atmospheric record, going back only 160 years, have been in the last eleven years.

Civil disobedience has an honourable history, and when the urgency and moral clarity cross a certain threshold, then I think that civil disobedience is quite understandable, and it has a role to play.