Human releases of carbon dioxide are almost certainly happening faster than any natural carbon release since the beginning of life on Earth.

At 1.24 am on 26 April 1986 Chernobyl’s Unit 4 reactor exploded after staff disabled safety systems and performed an ill-advised experiment to check – ironically enough – the reactor’s safety.

We humans, one species of animal amongst millions, have now become the de facto guardians of the planet's climate stability.

If we are to save humanity and the planet from the worst mass extinction of all time, worse even than that at the end of the Permian, we must stop at two degrees.

You'd be forgiven for thinking that climate change means we'll have to sacrifice our creature comforts. But it doesn't have to be that way.

This is like playing Russian roulette with a Luger rather than a revolver. One bullet, one chamber - and we're pulling the trigger.

Our evolutionary psychology preconditions us not to respond to threats which can be postponed until later.

I discovered science, and in the process I hope I became a better environmentalist.

If substantial methyl hydrate melt begins to occur in the Arctic Ocean basin, then the (carbon) accelerator will be jammed, and there will be nothing we can do to cut the speed of climate change.

Once the 'portals of the future close - in Amazonia, Siberia or the Arctic - we will find ourselves powerless to affect the outcome of this dreadful tale.

Conventional economic theory... counts the depletion of resources as the accumulation of wealth.

I'm not a hero but I can end the war

Stand out. Dare to deliver what’s in your heart.

Loyalty, respect for authority and some degree of sanctification create a more binding social order that places some limits on individualism and egoism.

I have this beast. He comes and goes at will.Silence.He's very powerful.Silence.He has control over me.Silence.I want to come and go at will.Silence.I want to be the powerful one.

Life has loveliness to sell, all beautiful and splendid things, blue waves whitened on a cliff, soaring fire that sways and sings, and children's faces looking up, holding wonder like a cup.

If no one else has ever told you this before, I will tell it to you one more time and hope you believe it and never forget it for the rest of your life: You deserve to be treated well.

I may err in judgment, but I hope not in intention.

Life may as properly be called an art as any other.

Anyone can build a house: we need the Lord for the creation of a home.

Deal with difficult tasks while they are easy. Act on large issues while they are small.