“Tom Paine ” (no, not that one) on what a Green really means when he says that he wants to “save the planet”: “I am a puritanical killjoy with no concept of the scientific method and a burning desire to decimate my fellow-men so that the ugliest remnants of humanity can live the short, miserable, disease-ridden, brutal lives of medieval peasants in a spirit of smug self-satisfaction born of the sense that we have condemned billions of tediously aspirational humans to poverty or death.” Tony Blair, David Cameron, please note.