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Carl Sagan Quote - Except in pure mathematics, nothing is known for certain (although much is certainly false).

Except in pure mathematics, nothing is known for certain (although much is certainly false).

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Certain Except False Mathematics Pure

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Marilyn Monroe Paulo Coelho Abraham Lincoln C. S. Lewis Khalil Gibran Charlie Chaplin Gautama Buddha Isaac Newton

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
If we ruin the earth, there is no place else to go.
CARL SAGAN

Earth Environment Nature Place Ruin
The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be consonant with what we desperately want to be true. But our preferences do not determine what’s true.
CARL SAGAN

desperatel Determination Preference Prejudice Puzzle True Truth Want Work
We make our world significant by the courage of our questions and the depth of our answers.
CARL SAGAN

Courage Depth Significance World
Nature is always more subtle, more intricate, more elegant than what we are able to imagine.
CARL SAGAN

Elegant Imagination Nature Stuble
Books permit us to voyage through time, to tap the wisdom of our ancestors.
CARL SAGAN

Book Permit Time Voyage Wisdom
Imagination will often carry us to worlds that never were, but without it we go nowhere.
CARL SAGAN

Business Carry Imagination Inspirational World
We are all stardust.
CARL SAGAN

One Liner Stardust
Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.
CARL SAGAN

Cosmic Disagree Finding Galaxy Human Love Mercy Perspective Precious
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
The universe is not required to be in perfect harmony with human ambition.
CARL SAGAN

Ambition Harmony Human Perfection Requirement Universe
I think the health of our civilization, the depth of our awareness about the underpinnings of our culture and our concern for the future can all be tested by how well we support our libraries.
CARL SAGAN

Awareness Book Civilization Concern Culture Depth Future Health Library Test
The notion that science and spirituality are somehow mutually exclusive does a disservice to both.
CARL SAGAN

Exclusive Mutual Notion Science Spiritual
If it can be destroyed by the truth, it deserves to be destroyed by the truth.
CARL SAGAN

Deserve Destroy Justice Science Truth
We are star stuff harvesting sunlight.
CARL SAGAN

Harvest Stars Stuff Sunlight
The universe is a pretty big place. If it’s just us, seems like an awful waste of space.
CARL SAGAN

Awful Place Pretty Science Space Universe Waste

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