Stephen Hawking

We are in danger of destroying ourselves by our greed and stupidity. We cannot remain looking inwards at ourselves on a small and increasingly polluted and overcrowded planet.

I believe that disabled people should concentrate on things that their handicap doesn't prevent them from doing and not regret those they can't do.

Time and space are finite in extent, but they don't have any boundary or edge. They would be like the surface of the Earth, but with two more dimensions.

The universe is governed by science. But science tells us that we can't solve the equations, directly in the abstract. We need to use the effective theory of Darwinian natural selection of those societies most likely to survive. We assign them higher value.