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There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.

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
Typical
Stars
Many
Molecule
Dna
Molecules
Galaxy
Atoms

More quotes by Carl Sagan

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Some racists still reject the plain testimony written in the DNA that all the races are not only human but nearly indistinguishable. . . .
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The vast distances that separate the stars are providential. Beings and worlds are quarantined from one another. The quarantine is lifted only for those with sufficient self-knowledge and judgment to have safely traveled from star to star.
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In our time, we have sifted the sands of Mars, we have established a presence there, we have fulfilled a century of dreams!
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If we're capable of conjuring up terrifying monsters in childhood, why shouldn't some of us, at least on occasion, be able to fantasize something similar, something truly horrifying, a shared delusion, as adults?
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A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism.
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Every star may be a sun to someone.
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The way to find out about our place in the universe is by examining the universe and by examining ourselves - without preconceptions, with as unbiased a mind as we can muster.
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Any sufficiently crisp question can be answered by a single binary digit-0 or 1, yes or no.
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You can get into a habit of thought in which you enjoy making fun of all those other people who don't see things as clearly as you do. We have to guard carefully against it.
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Because men, compared to male chimps, have such relatively small testicles (large testicles indicate a species where many males mate, one after the other, with the same female), we might guess that promiscuous societies were uncommon in the immediate human past.
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Other things being equal, it is better to be smart than to be stupid.
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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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Writing a novel is like trying to solve a very long mathematical equation. Changing anything can change everything else.
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What an astonishing thing a book is.
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In the long run, the aggressive civilizations destroy themselves, almost always. It's their nature. They can't help it.
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He sought a way to preserve the past. John Hershel was one of the founders of a new form of time travel.... a means to capture light and memories. He actually coined a word for it... photography. When you think about it, photography is a form of time travel. This man is staring at us from across the centuries, a ghost preserved by light.
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Advances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.
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In the vastness of the Cosmos there must be other civilizations far older and more advanced than ours.
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Modern Darwinism makes it abundantly clear that many less ruthless traits, some not always admired by robber barons and Fuhrers - altruism, general intelligence, compassion - may be the key to survival.
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The immense distances to the stars and the galaxies mean that we see everything ins pace int he past, some as they were before the Earth came to be. Telescopes are time machines.
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