One can imagine a time when men who still inhabit organic bodies are regarded with pity by those who have passed on to an infinitely richer mode of existence, capable of throwing their consciousness or sphere of attention instantaneously to any point on land, sea, or sky where there is a suitable sensing organ. In adolescence we leave childhood behind; one day there may be a second and more portentous adolescence, when we bid farewell to the flesh.

I don't believe in God but I'm very interested in her.

The realisation that our small planet is only one of many worlds gives mankind the perspective it needs to realise sooner that our own world belongs to all its creatures.

In the long run, there are no secrets. in science. The universe will not cooperate in a cover-up.

Getting information from the internet is like getting a glass of water from the Niagara Falls.

I want to be remembered most as a writer - one who entertained readers, and, hopefully, stretched their imagination as well.

It is really quite amazing by what margins competent but conservative scientists and engineers can miss the mark, when they start with the preconceived idea that what they are investigating is impossible.