Space is what stops everything from happening in the same place.

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

I don't believe in astrology; I'm a Sagittarius and we're skeptical.

The only way to define your limits is by going beyond them.

The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.

The moon is the first milestone on the road to the stars.

I'm sure the universe is full of intelligent life. It's just been too intelligent to come here.

Any sufficiently advanced technology is indistinguishable from magic.

There is hopeful symbolism in the fact that flags do not wave in a vacuum.

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.

Until we get rid of religion, we won't be able to conduct the search for God.

You are the only author of your book that matters.

You don't understand what makes you understand what makes your life better until you take something that makes it so much worse and you embrace that.

Have you ever given someone a book you enjoyed enormously, with a feeling of envy because they were about to read it for the first time, an experience you could never have again?

You have only to begin, Lir. Mercy breeds mercy as slaughter breeds slaughter. We can’t expect the world to be better than we make it.

I'm quite an opinionated person, but I'd never written a diary before. I quite like it!

The unarmed man is not just defenseless - he is also contemptible.

Is there any other industry [than the press] in this country which seeks to presume so completely to give the customer what he does not want?

One of the things about my ministry is that I have never branded myself as being above the people or superior to people.

In a word I claim that our city as a whole is an education to Greece.

I've opened my mouth on a lot of subjects. And I thought the more prestige you get, I'd have the power to do what I like. It's not true.