... Maybe a hundred years down the line, nobody will look back at climate change as the most important issue of the early 21st century, because the damage will have been done, and the idea that it might have been prevented will seem absurd. Maybe the idea that Mali and Burkina Faso were once inhabited countries rather than empty deserts will seem queer, and the immiseration of huge numbers of stateless refugees thronging against the borders of the rich northern countries will be taken for granted. The absence of the polar ice cap and the submersion of Venice will have been normalised; nobody will think of these as live issues, no one will spend their time reproaching their forefathers, there'll be no moral dimension at all. We will have wrecked the planet, but our great-grandchildren won't care much, because they'll have been born into a planet already wrecked.
quoted from "Durban and everything that matters" on The Economist.