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

There is no heaven or afterlife for broken down computers; that is a fairy story for people afraid of the dark.

Many people find the universe confusing - it's not.

When something is made idiot proof, they will just make better idiots.

Our population and our use of the finite resources of planet Earth are growing exponentially, along with our technical ability to change the environment for good or ill. But our genetic code still carries the selfish and aggressive instincts that were of survival advantage in the past. It will be difficult enough to avoid disaster in the next hundred years, let alone the next thousand or million. Our only chance of long term survival, is not to remain inward looking on planet Earth, but to spread out into space.

If the total energy of the universe must always remain zero, and it costs energy to create a body, how can a whole universe be created from nothing?

If I have questions about the universe on my mind when I go to bed, I can't turn off. I dream equations all night.