I have lived with the prospect of an early death for the last 49 years. I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first. I regard the brain as a computer which will stop working when its components fail. There is no heaven or afterlife for broken down computers; that is a fairy story for people afraid of the dark.

The boundary condition of the universe is that it has no boundary.

Although quantum mechanics has been around for nearly 70 years, it is still not generally understood or appreciated, even by those that use it to do calculations.

A lot of prizes have been awarded for showing the universe is not as simple as we might have thought.

The moment you understand the whole Universe, is the moment you slightly begin to understand the way God's mind works

It is generally recognised that women are better than men at languages, personal relations and multi-tasking, but less good at map-reading and spatial awareness. It is therefore not unreasonable to suppose that women might be less good at mathematics and physics.

There is a real danger that computers will develop intelligence and take over.