Astronomy, as nothing else can do, teaches men humility.

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.

Everyone in society should be a role model, not only for their own self-respect, but for respect from others.

Present annual world energy consumption is about equal to the annihilation energy of 4 tons of matter.

I got my lips chewed off by a dingo!

I'll just sit at the piano a lot an play like through different chord exercises and kind of just throwing my hands down on the piano from one chord to the next to see what happens.

There are people who do, what we would call, lower sorcery. It is best not to be concerned with them. They are not happy people and they can't be a problem if you are aware of what they are doing.

Certain drugs provide brief excursions into altered states of consciousness. The problem is that the perceptions and understandings that come from these experiences don't tend to last.

Women bestow on friendship only what they borrow from love.

There is no point trying to figure out who is guilty or not at un-balancing the planet. I think we need to figure out and solve the problems together and not isolate from each other.

To go beyond the mind, you must be silent and quiet. Peace and silence, silence and peace - this is the way beyond. Stop asking questions.

In joined hands there is still some token of hope, in the clenched fist none.