I think so long as fossil fuels are cheap, people will use them and it will postpone a movement towards new technologies.

It's as certain that as long as fossil fuels are the cheapest energy, we will just keep burning them.

Nothing could do more to help the world's poor than to make fossil fuels cheap and plentiful.

As long as we're dependent on those fossil fuels, we're dependent on the Middle East. If we are not victims, we're certainly captives.

I think that the world is in the middle of a huge transition that we have to make to renewable energy. We have to transition away from fossil fuels very, very quickly.

Practically every environmental problem we have can be traced to our addiction to fossil fuels, primarily oil.