I'm quite fond of the writer who told a beginning author, "If you've got a message, use Western Union."

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.

Writing is really a way of thinking--not just feeling but thinking about things that are disparate, unresolved, mysterious, problematic or just sweet.

The person you are in the dark will eventually be the person you are in the light.

I know gray areas too well. I write for silent audiences.

Everybody thinks of changing humanity and nobody thinks of changing himself.

Democracy shows not only its power in reforming governments, but in regenerating a race of men and this is the greatest blessing of free governments.

Worry, doubt, fear and despair are the enemies which slowly bring us down to the ground and turn us to dust before we die.

I think love lyrics have contributed to the general aura of bad mental health in America.

Because I was raised in a Christian culture I never considered myself to be a totally free human being.

What will happen to us?" I asked. "There will always be us," he answered.

Paradoxical as it may at first appear, the fact is that, as W. H. George has said, scientific research is an art, not a science.