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If you wish to make an apple pie from scratch, you must first invent the universe.

Carl Sagan

The universe is not required to be in perfect harmony with human ambition.
CARL SAGAN

Ambition Harmony Human Perfection Requirement Universe
The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.
CARL SAGAN

Apple Blood Calcium DNA Interior Nitrogen Stars Teeth
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
Science is not only compatible with spirituality; it is a profound source of spirituality.
CARL SAGAN

Compatible Profound Science Soource Spiritual
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
The cure for a fallacious argument is a better argument, not the suppression of ideas.
CARL SAGAN

Argument Cure Ideas Suppression
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
And you are made of a hundred trillion cells. We are, each of us, a multitude.
CARL SAGAN

Biology Cell Science
We are all stardust.
CARL SAGAN

One Liner Stardust
Imagination will often carry us to worlds that never were, but without it we go nowhere.
CARL SAGAN

Business Carry Imagination Inspirational World
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
For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
CARL SAGAN

Assure Delusion Grasp Persistence Satisfaction Universe
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 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
Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.
CARL SAGAN

Avoid Cause Human Ignorance Misery Ourselves Particular Stupidity
Science is a way to not fool ourselves.
CARL SAGAN

Fools One Liner Ourselves Science

If you wish to make an apple pie from scratch, you must first invent the universe.

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If you wish to make an apple pie from scratch, you must first invent the universe.

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