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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

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

Certain Except False Mathematics Pure
We are like butterflies who flutter for a day and think it is forever.
CARL SAGAN

Butterfly Forever Human Nature Thinking
If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.
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Accumulate Destroy Ourselves Power Sure Wisdom
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 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
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
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
CARL SAGAN

Dependent Exquisite Live Science Society Technology
Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.
CARL SAGAN

Alone Coordinate Deal Greatness Information Intelligence Judgement Knowledge Manner Smart Used
Don’t judge everyone else by your own limited experience.
CARL SAGAN

Experience Judgement Life Limitation
The notion that science and spirituality are somehow mutually exclusive does a disservice to both.
CARL SAGAN

Exclusive Mutual Notion Science Spiritual
The Earth is a very small stage in a vast cosmic arena.
CARL SAGAN

Arena Cosmic Earth Stage Vast
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
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
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
You have to know the past to understand the present.
CARL SAGAN

Deep Inspirational One Liner Past Present Understand

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