The Earth is a very small stage in a vast cosmic arena.

Carl Sagan

Arena Cosmic Earth Small

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There is a wide, yawning black infinity. In every direction, the extension is endless; the sensation of depth is overwhelming. And the darkness is immortal. Where light exists, it is pure, blazing, fierce; but light exists almost nowhere, and the blackness itself is also pure and blazing and fierce.

Carl Sagan

Fierce Darkness Black Light

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Imagination will often carry us to worlds that never were. But without it we go nowhere.

Carl Sagan

Carry Imagination Never Nowhere

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We've arranged a civilization in which most crucial elements profoundly depend on science and technology.

Carl Sagan

Arranged Civilization Crucial Depend

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The universe seems neither benign nor hostile, merely indifferent.

Carl Sagan

Benign Hostile Indifferent Merely

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We're in very bad trouble if we don't understand the planet we're trying to save.

Carl Sagan

Bad Planet Save Trouble

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When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it.

Carl Sagan

Earth Finding Forget Last

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I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star.

Carl Sagan

Bright Classes Night Rise

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Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out.

Carl Sagan

Chance Continue Death Delighted

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All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year. Not all bits have equal value.

Carl Sagan

American Bits Books Broadcast

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The universe is not required to be in perfect harmony with human ambition.

Carl Sagan

Ambition Harmony Human Perfect

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For small creatures such as we the vastness is bearable only through love.

Carl Sagan

Bearable Creatures Love Only

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Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.

Carl Sagan

Forgotten Galaxy Insignificant Live

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I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students.

Carl Sagan

Amazed Among Capability College

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Science is a way of thinking much more than it is a body of knowledge.

Carl Sagan

Body Knowledge More Science

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The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

Carl Sagan

Brain Good Joyous Muscle

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We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

Carl Sagan

Anyone Anything Dependent Hardly

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It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

Carl Sagan

Better Delusion Far Grasp

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If you wish to make an apple pie from scratch, you must first invent the universe.

Carl Sagan

Apple Pie First Invent

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Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense.

Carl Sagan

Deep Nonsense Religion Science

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If we long to believe that the stars rise and set for us, that we are the reason there is a Universe, does science do us a disservice in deflating our conceits?

Carl Sagan

Believe Disservice Long Reason

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But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright Brothers. But they also laughed at Bozo the Clown.

Carl Sagan

Brothers Clown Columbus Fact

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We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.

Carl Sagan

Power Prescription Science Technology

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Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.

Carl Sagan

Awake Basic Understanding Citizenry

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Absence of evidence is not evidence of absence.

Carl Sagan

Absence Evidence Not

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Extinction is the rule. Survival is the exception.

Carl Sagan

Exception Extinction Rule Survival

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In our obscurity - in all this vastness - there is no hint that help will come from elsewhere to save us from ourselves. It is up to us.

Carl Sagan

Come Help Hint Obscurity

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The professed function of the nuclear weapons on each side is to prevent the other side from using their nuclear weapons. If that's all it is, then we've gotta as: how many nuclear weapons do you need to do that?

Carl Sagan

Each Function Weapons Gotta

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No other planet in the solar system is a suitable home for human beings; it's this world or nothing. That's a very powerful perception.

Carl Sagan

Beings Home Human Planet

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Even these stars, which seem so numerous, are as sand, as dust - or less than dust - in the enormity of the space in which there is nothing.

Carl Sagan

Dust Enormity Numerous Sand

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The boundary between space and the earth is purely arbitrary. And I'll probably always be interested in this planet - it's my favorite.

Carl Sagan

Arbitrary Between Boundary Earth

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Most of the people that I deal with are human. So I've had a lot of experience with that.

Carl Sagan

Deal Experience Human Lot

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The dangers of not thinking clearly are much greater now than ever before. It's not that there's something new in our way of thinking - it's that credulous and confused thinking can be much more lethal in ways it was never before.

Carl Sagan

Clearly Confused Credulous Dangers

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"33 Carl Sagan Quotes & Sayings

The Earth is a very small stage in a vast cosmic arena.

Carl Sagan

Carl Sagan

Imagination will often carry us to worlds that never were. But without it we go nowhere.

Carl Sagan

We've arranged a civilization in which most crucial elements profoundly depend on science and technology.

Carl Sagan

Carl Sagan

We're in very bad trouble if we don't understand the planet we're trying to save.

Carl Sagan

When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it.

Carl Sagan

I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star.

Carl Sagan

Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out.

Carl Sagan

All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year. Not all bits have equal value.

Carl Sagan

The universe is not required to be in perfect harmony with human ambition.

Carl Sagan

Carl Sagan

Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.

Carl Sagan

I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students.

Carl Sagan

Science is a way of thinking much more than it is a body of knowledge.

Carl Sagan

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

Carl Sagan

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

Carl Sagan

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

Carl Sagan

If you wish to make an apple pie from scratch, you must first invent the universe.

Carl Sagan

Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense.

Carl Sagan

If we long to believe that the stars rise and set for us, that we are the reason there is a Universe, does science do us a disservice in deflating our conceits?

Carl Sagan

But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright Brothers. But they also laughed at Bozo the Clown.

Carl Sagan

We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.

Carl Sagan

Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.

Carl Sagan

Carl Sagan

Carl Sagan

In our obscurity - in all this vastness - there is no hint that help will come from elsewhere to save us from ourselves. It is up to us.

Carl Sagan

The professed function of the nuclear weapons on each side is to prevent the other side from using their nuclear weapons. If that's all it is, then we've gotta as: how many nuclear weapons do you need to do that?

Carl Sagan

No other planet in the solar system is a suitable home for human beings; it's this world or nothing. That's a very powerful perception.

Carl Sagan

Even these stars, which seem so numerous, are as sand, as dust - or less than dust - in the enormity of the space in which there is nothing.

Carl Sagan

The boundary between space and the earth is purely arbitrary. And I'll probably always be interested in this planet - it's my favorite.

Carl Sagan

Most of the people that I deal with are human. So I've had a lot of experience with that.

Carl Sagan

The dangers of not thinking clearly are much greater now than ever before. It's not that there's something new in our way of thinking - it's that credulous and confused thinking can be much more lethal in ways it was never before.

Carl Sagan

Carl Sagan Quotes & Sayings

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