“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.”

“I particularly dislike the high-profile switch-off campaigns where whole cities are plunged into darkness for an hour as a supposedly symbolic gesture about energy use. So is the implication that we all need to live in constant gloom to reduce CO2 emissions?”

“First, guilt-tripping doesn’t work as a campaigning strategy. If you make people feel bad about what they do, you must give them a realistic and feasible alternative. Second, pragmatism beats purism. Every time.”

“It would be easy to laugh this off were it not so obviously counterproductive. The idea that tackling climate change means accepting profound levels of intrusion into our everyday lives – and the economic disaster of dramatic drops in consumption and living standards – is an illusion that is actually shared by the Green left and the libertarian right.”

“It was indeed a glad and gracious time, and the half dozen rash spirits that ventured to disapprove of the war and cast a doubt upon its righteousness straightway got such a stern and angry warning that for their personal safety's sake they quickly shrank out of sight and offended no more in that way.”

“It’s a lie. There isn’t safety in numbers. But there is safety in letters. There are only 26 letters, and yet they are more powerful than an army of infinite men. Show me a man or an army that can kill an idea, and I’ll show you an example of the absurd.”

“April 1. This is the day upon which we are reminded of what we are on the other three hundred and sixty-four..”