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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

Bagwalas

Popular Authors

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
Extinction is the rule. Survival is the exception.
CARL SAGAN

Exception Exrinction Rule Survival
We are star stuff which has taken its destiny into its own hands.
CARL SAGAN

Destiny Hands Science Stars Stuff
Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.
CARL SAGAN

Depth Different Giving Involvement Love Number Perhaps Relationship
We make our world significant by the courage of our questions and the depth of our answers.
CARL SAGAN

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

Elegant Imagination Nature Stuble
Every star may be a sun to someone.
CARL SAGAN

Deep One Liner Stars Sun
The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth.
CARL SAGAN

Beach Earth Grain Number Planet Sand Science Stars Universe
To live in the hearts we leave behind is to live forever.
CARL SAGAN

Break Up Couple Deep Forever Heart Leaving Live Love
Any faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.
CARL SAGAN

Accommodation Admire Enough Faith God Strive Truth Universe
Except in pure mathematics, nothing is known for certain (although much is certainly false).
CARL SAGAN

Certain Except False Mathematics Pure
I’ve always thought an agnostic is an atheist without the courage of his convictions.
CARL SAGAN

Atheist Conviction Courage

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