One of the great tragedies of mankind is that morality has been hijacked by religion.

If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong.

As three laws were good enough for Newton, I have modestly decided to stop there.

I would defend the liberty of consenting adult creationists to practice whatever intellectual perversions they like in the privacy of their own homes; but it is also necessary to protect the young and innocent.

The success of a science fiction writer is if he can write a good read.

The limits of the possible can only be defined by going beyond them into the impossible.

Why, Robert Singh often wondered, did we give our hearts to friends whose life spans are so much shorter than our own?