Absolutely no religious rites of any kind, relating to any religious faith, should be associated with my funeral.

Open the pod bay doors, Hal.

The best proof that there's intelligent life in the universe is that it hasn't come here.

Perhaps, as some wit remarked, the best proof that there is Intelligent Life in Outer Space is the fact it hasn't come here. Well, it can't hide forever - one day we will overhear it.

The phenomenon of UFO doesn't say anything about the presence of intelligence in space. It just shows how rare it is here on the earth.

I don't think there is such a thing as as a real prophet. You can never predict the future. We know why now, of course; chaos theory, which I got very interested in, shows you can never predict the future.

The space elevator will be built about 50 years after everyone stops laughing.