The one fact about the future of which we can be certain is that it will be utterly fantastic.

I have great faith in optimism as a guiding principle, if only because it offers us the opportunity of creating a self-fulfilling prophecy.

Some things have eternal value, and compassion is one of them. I hope we never lose that. Compassion for humans as well as animals.

'The Devil in the Dark' impressed me because it presented the idea, unusual in science fiction then and now, that something weird, and even dangerous, need not be malevolent. That is a lesson that many of today's politicians have yet to learn.

The moment when one first meets a great work of art has an impact that can never again be recaptured.

I have never grown up, but I will never stop growing.

Now times had changed, and the inherited wisdom of the past had become folly.