All explorers are seeking something they have lost. It is seldom that they find it, and more seldom still that the attainment brings them greater happiness than the quest.

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.

A ‘sensitive’ person will not have common sense.

I certainly feel sad about the alienation from my son.

Stand firm, don't flutter!

Out of pain and problems have come the sweetest songs, the most poignant poems, the most gripping stories.

If the race is to be freed from its crippling burden of good and evil it must be psychiatrists who take the original responsibility

A man's word and his intestinal fortitude are two of the most honorable virtues known to mankind.

Music is an extraordinary locksmith; it is so competent that it can open our soul's door even with closed eyes!

I'm just saying that there are high quality materials, and when we change them then there should be a way of changing them so that you can celebrate that change - rather than just 'mix it up'.

Leadbelly's guitar is in the Rock n' Roll Hall of Fame.

As all error is meanness, it is incumbent on every man who consults his own dignity, to retract it as soon as he discovers it.