I think the brain is essentially a computer and consciousness is like a computer program. It will cease to run when the computer is turned off. Theoretically, it could be re-created on a neural network, but that would be very difficult, as it would require all one's memories.

Science is beautiful when it makes simple explanations of phenomena or connections between different observations.

There is a very real danger that we will kill everything on this planet now that we have the technological power to do so.

When two's company, three's the result!

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory.

Many people do not like the idea that time has a beginning, probably because it smacks of divine intervention.

There are plenty of dead scientists I admire, but I can't think of any living ones. This is probably because it is only in retrospect that one can see who made the important contributions.