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Carl Sagan Quote - You have to know the past to understand the present.

You have to know the past to understand the present.

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Deep Inspirational One Liner Past Present Understand

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

There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
CARL SAGAN

Delicate Forbidden Matter Scare Science Sensitive Truth
If we ruin the earth, there is no place else to go.
CARL SAGAN

Earth Environment Nature Place Ruin
Across the sea of space, the stars are other suns.
CARL SAGAN

Across Sea Space Stars Sun
The Earth is a very small stage in a vast cosmic arena.
CARL SAGAN

Arena Cosmic Earth Stage Vast
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
Not all birds can fly. What separates the flyers from the walkers is the ability to take off.
CARL SAGAN

Ability Bird Fly Motivational Separate Walk Work Hard
We are star stuff which has taken its destiny into its own hands.
CARL SAGAN

Destiny Hands Science Stars Stuff
There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
CARL SAGAN

Atom DNA Galaxy Molecule Science Stars Typical
Books are like seeds. They can lie dormant for centuries and then flower in the most unpromising soil.
CARL SAGAN

Book Century Flower Lie Promise Seed Soil
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
One of the great commandments of science is: Mistrust arguments from authority.
CARL SAGAN

Argument Authority Command Greatness Science Trust
Extinction is the rule. Survival is the exception.
CARL SAGAN

Exception Exrinction Rule Survival
Writing is the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another.
CARL SAGAN

Blind Citizen Distant Greatness Human Invention People Togetherness Writing
If it can be destroyed by the truth, it deserves to be destroyed by the truth.
CARL SAGAN

Deserve Destroy Justice Science Truth
Human beings have a demonstrated talent for self-deception when their emotions are stirred.
CARL SAGAN

Deception Demonstrate Emotion Human
The notion that science and spirituality are somehow mutually exclusive does a disservice to both.
CARL SAGAN

Exclusive Mutual Notion Science Spiritual

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