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.

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.

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

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.

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

I may have not done History in high school but War cannot be ended by endless talks, only Cold War.

There can never be peace between nations until there is first known that true peace which... is within the souls of men.

He will rattle your cage and then break your heart.

Art is a reality, not a definition; inasmuch as it approaches a reality, it approaches perfection, and inasmuch as it approaches a mere definition, it is imperfect and untrue.

The majority of problems on this planet are the result of the idea that humans are not sovereign and autonomous, but property owned by primitive Gods and incompetent governments.

Old age is when you are not bothered with bad dreams, but with bad reality.

The gifts of Heaven are never quite gratuitous.

A true revolution of values will soon cause us to question the fairness and justice of many of our present policies.

It is the just decree of Heaven that a traitor never sees his danger till his ruin is at hand.

Brandon Boyd of Incubus is hot, but he's too pretty.