You can't regulate every lab in the world.

What I meant by 'we would know the mind of God' is, we would know everything that God would know, if there were a God. Which there isn't. I'm an atheist.

I thought Eddie Redmayne portrayed me very well... At times I thought he was me.

If we ever do find a complete theory of the universe, it would be a great triumph of human reason but it wouldn't leave much for us to do. We need an intellectual challenge.

If I knew what was going to happen in ten years I would do it now. I just follow my nose.

Only time - whatever that may be - will tell.

"Sooner or later disasters such as an asteroid collision or a nuclear war could wipe us all out, But once we spread out into space and establish independent colonies, our future should be safe."