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We are at a crossroads in human history. Never before has there been a moment so simultaneously perilous and promising. We are the first species to have taken evolution into our own hands.

Carl Sagan

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Carl Sagan
Age: 62 †
Born: 1934
Born: November 9
Died: 1996
Died: December 20
Astronomer
Astrophysicist
Cosmologist
Naturalist
Non-Fiction Writer
Novelist
Physicist
Planetary Scientist
Science Communicator
Brooklyn
New York
Carl Edward Sagan
Sagan
Carl E. Sagan
Carl E Sagan
C. E. Sagan
C.E. Sagan
C E Sagan
C. Sagan
C Sagan
Sagan C
Sagan C.
Sagan C. E.
Sagan CE
Moments
Promising
Hands
Simultaneously
Firsts
Species
Human
Evolution
Humans
Sin
First
Taken
Never
Moment
Perilous
History
Crossroads

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If you want to save your child from polio, you can pray or you can inoculate....Try science.
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We live in an in-between universe where things change all right...but according to patterns, rules, or as we call them, laws of nature.
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Except for children (who don't know enough not to ask the important questions), few of us spendtime wondering why nature is the way it is . . .
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Across the sea of space, the stars are other suns.
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Somewhere, something incredible is waiting to be known.
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A stars rich in europium of distant galaxies analyzed through the collective light of a hundred billion constituent stars. Astronomical spectroscopy is an almost magical technique. It amazes me still. Auguste Comte picked a particularly unfortunate example.
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These days there seems to be nowhere left to explore, at least on the land area of the Earth. Victims of their very success, the explorers now pretty much stay home.
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We live in a society exquisitely dependent on science and technology and yet have cleverly arranged things so that almost no one understands science and technology.
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The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five.
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Books are key to understanding the world and participating in a democratic society.
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We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
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What began in deadly competition has helped us to see that global cooperation is the essential precondition for our survival. Travel is broadening. It's time to hit the road again.
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So those who wished for some central cosmic purpose for us, or at least our world, or at least our solar system, or at least our galaxy, have been disappointed, progressively disappointed. The universe is not responsive to our ambitious expectations.
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Chlorine is a deadly poison gas employed on European battlefields in World War I. Sodium is a corrosive metal which burns upon contact with water. Together they make a placid and unpoisonous material, table salt. Why each of these substances has the properties it does is a subject called chemistry.
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Science is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course. Microbiology and meteorology now explain what only a few centuries ago was considered sufficient cause to burn women to death.
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There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
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Even Johannes Kepler, Isaac Newton, Charles Darwin, Gregor Mendel, and Albert Einstein made serious mistakes. But the scientific enterprise arranges things so that teamwork prevails: What one of us, even the most brilliant among us, misses, another of us, even someone much less celebrated and capable, may detect and rectify.
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Human beings grew up in forests we have a natural affinity for them. How lovely a tree is, straining toward the sky.
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Discussing the possibilities of extraterrestrial life: I would love it even if they were short, sullen, grumpy and sexually obsessed. But there just isn't any good evidence.
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The understanding of the intent of the artist which I can achieve when high sometimes carries over to when I’m down. This is one of many human frontiers which cannabis has helped me traverse.
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