The numbers of distinct human societies or nations, when our race is twice its present age, may be far greater than the total number of all the men who have ever lived up to the present time.

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.

Let's stop judging others, and relieve them of the heavy burden they are carrying on their shoulders because of us.

When you run with the bulls, it's no use walking.

Crime is terribly revealing. Try and vary your methods as you will, your tastes, your habits, your attitude of mind, and your soul is revealed by your actions.

So this is all part of a free society. People are entitled to hold whatever view they want, and the media can report things how they wish.

Give me a man with an average ability but a burning desire to succeed and I will give you a winner in exchange every time.

The music of the most popular operas is so highly esteemed, it can stand endless revivals.

In the U.S., coaches could be the father next door. They had no formal training. They're like old hockey players. They don't go to school and study.

I'm trying to get low. People's personalities can get in the way of their own work.

In a battle between two ideas, the best one doesn't necessarily win. No, the idea that wins is the one with the most fearless heretic behind it.

Because I know that time is always time And place is always and only place.