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The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but rather from an investigation of the governing physics.

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
War
Global
Prediction
Experience
Winter
Predictions
Science
Nuclear
Governing
Consequence
Investigation
Direct
Drawn
Courses
Consequences
Course
Experiments
Rather
Physics

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That we can now think of no mechanism for astrology is relevant but unconvincing. No mechanism was known, for example, for continental drift when it was proposed by Wegener. Nevertheless, we see that Wegener was right, and those who objected on the grounds of unavailable mechanism were wrong.
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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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The Hindu religion is the only of the World's great faiths dedicated to the idea that the Cosmos itself undergoes an immense, indeed an infinite, number of deaths and rebirths.
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The universe is a pretty big place. If it's just us, seems like an awful waste of space.
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A book is proof that humans are capable of working magic.
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The surface of the Earth is the shore of the cosmic ocean. From it we have learned most of what we know. Recently, we have waded a little out to sea, enough to dampen our toes or, at most, wet our ankles. The water seems inviting. The ocean calls.
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He didn't want to believe. He wanted to know.
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I am not an atheist. An atheist is someone who has compelling evidence that there is no Judeo-Christian-Islamic God. I am not that wise, but neither do I consider there to be anything approaching adequate evidence for such a god. Why are you in such a hurry to make up your mind? Why not simply wait until there is compelling evidence?
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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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The cure for a fallacious argument is a better argument, not the suppression of ideas.
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If the constellations had been named in the twentieth century, I suppose we would see bicycles and refrigerators in the sky.
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We are an intelligent species and the use of our intelligence quite properly gives us pleasure. In this respect the brain is like a muscle. When we think well, we feel good. Understanding is a kind of ecstasy.
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Which aspects of our nature will prevail is uncertain, particularly when our visions and prospects are bound to one small part of the small planet Earth. But up there in the Cosmos an inescapable perspective awaits.
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For all our failings, despite our limitations and fallibilities, we humans are capable of greatness.
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You're capable of such beautiful dreams and such horrible nightmares.
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It is said that men may not be the dreams of the god, but rather that the gods are the dreams of men.
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Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.
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I think the discomfort that some people feel in going to the monkey cages at the zoo is a warning sign.
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In many cultures it is customary to answer that God created the universe out of nothing. But this is mere temporizing. If we wish courageously to pursue the question, we must, of course ask next where God comes from? And if we decide this to be unanswerable, why not save a step and conclude that the universe has always existed?
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In the fabric of space and in the nature of matter, as in a great work of art, there is, written small, the artist's signature.
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