I sometimes wonder how we spent leisure time before satellite television and Internet came along…and then I realise that I have spent more than half of my life in the ‘dark ages’!

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.

There are many talented people who haven't fulfilled their dreams because they over thought it, or they were too cautious, and were unwilling to make the leap of faith.

The musician is perhaps the most modest of animals, but he is also the proudest. It is he who invented the sublime art of ruining poetry.

Most of us have only two or three genuinely interesting moments in our lives; the rest is filler.

Though ambition in itself is a vice, it often is also the parent of virtue.

A book burrows into your life in a very profound way because the experience of reading is not passive.

Free man is by necessity insecure, thinking man by necessity uncertain.

Anyone who criticizes you cares about your friendship. Anyone who makes light of your faults cares nothing about you.

I don't do marriage. I think it's incredibly naff. And I don't like vulgar displays of ostentation.

You plan and plan and plan then Africa happens

Lock yourself up in your room or go out in the woods where you an be alone. When you are alone the universe talks to you in flashes of inspiration.