Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?

There should be a better way to start a day than waking up every morning.

People won't have time for you if you are always angry or complaining.

Science does not deny religion, it just offers a simpler alternative.

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

I think [contacting an alien civilization] would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.

Nothing is better than reading and gaining more and more knowledge.