In the long run, especially with the problems of climate change, I think we need to move towards a fossil fuel-free system, so in the long run I would say, yes. In the short run, I think we need to be more practical to see how we can change towards an economy that does not rely on fossil fuels. There will be, of course, some continued use of oil and gas going on, but I do think—
On November 30th, 2017. See this statement in context.