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A book is made from a tree. It is an assemblage of flat, flexible parts (still called “leaves”) imprinted with dark pigmented squiggles.

Carl Sagan

When we look up at night and view the stars, everything we see is shinning because of distant nuclear fusion.
CARL SAGAN

Distant Fusion Look Night Nuclear Science Shine Stars
A book is made from a tree. It is an assemblage of flat, flexible parts (still called “leaves”) imprinted with dark pigmented squiggles.
CARL SAGAN

Assemble Book Leaf Print Tree
We are star stuff which has taken its destiny into its own hands.
CARL SAGAN

Destiny Hands Science Stars Stuff
The price we pay for anticipation of the future is anxiety about it.
CARL SAGAN

Anticipation Anxiety Future Pay Price
If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read.
CARL SAGAN

Book Content Finish Library Lifetime Percent Reading Time Trick Week
We all have a thirst for wonder. It’s a deeply human quality. Science and religion are both bound up with it.
CARL SAGAN

Bound Human Quality Religion Science Thirist Wonder
The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.
CARL SAGAN

Atom Beauty Cosmic Couple Live Marriage Togetherness
A galaxy is composed of gas and dust and stars – billions upon billions of stars. Every star may be a sun to someone.
CARL SAGAN

Compose Dust Galaxy Gas Stars Sun
The Earth is the only world known so far to harbor life.
CARL SAGAN

Earth Harbor Life
The significance of our lives and our fragile planet is then determined only by our own wisdom and courage.
CARL SAGAN

Courage Determination Fragile Live Planet Significance Wisdom
Arguments from authority carry little weight, authorities have made mistakes in the past. They will do so again in the future. Perhaps a better way to say it is that in science there are no authorities; at most, there are experts.
CARL SAGAN

Argument Authority Expert Future Mistake Past Weight
I’ve always thought an agnostic is an atheist without the courage of his convictions.
CARL SAGAN

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

Awake Citizen Deserve Mind Species Understand Work World
Advances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.
CARL SAGAN

Advance Agriculture History Live Lost Medicine Save Science Vast War
People are not stupid. They believe things for reasons.
CARL SAGAN

Believe Deep People Reason Stupidity
Where we have strong emotions, we’re liable to fool ourselves.
CARL SAGAN

Atheist Emotion Fools Liable Ourselves Strong

A book is made from a tree. It is an assemblage of flat, flexible parts (still called “leaves”) imprinted with dark pigmented squiggles.

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A book is made from a tree. It is an assemblage of flat, flexible parts (still called “leaves”) imprinted with dark pigmented squiggles.

Related Topics

Popular Authors

More Carl Sagan Quotes