Carl Sagan

(Carl Edward Sagan)

Carl Sagan
Carl Sagan
  • Born: November 9, 1934
  • Died: December 20, 1996
  • Nationality: American
  • Profession: Scientist









Carl Edward Sagan was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences. He is best known for his work as a science popularizer and communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space: the Pioneer plaque and the Voyager Golden Record, universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. Sagan argued the now accepted hypothesis that the high surface temperatures of Venus can be attributed to and calculated using the greenhouse effect.

Quotes About
Author Quote
Quote Topics Cited
Absence of evidence is not evidence of absence. Politics, Politicians & Political Campaigning & Fund Raising
Every thinking person fears nuclear war, and every technological nation plans for it. Nuclear, Chemical & Biological Weapons & Energy
Extraordinary claims require extraordinary evidence. Politics, Politicians & Political Campaigning & Fund Raising
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion Science, Mathematics, Engineering & Technology
The health of our civilization, the depth of our awareness about the underpinnings of our culture, and our concern for the future can be tested by how well we support out libraries. Education, Learning, Knowledge & Training
The idea that God is an oversized white male with a flowing beard who sits in the sky and tallies the fall of every sparrow is ludicrous. But if by God one means the set of physical laws that govern the universe, then clearly there is such a God. This God is emotionally unsatisfying... it does not make much sense to pray to the law of gravity. Religion & God
The universe is not required to be in perfect harmony with human ambition. Environment & Environmentalism
This planet is run by crazy people. Remember what they have to do to get where they are. Their perspective is so narrow, so...brief. A few years. In the best of them a few decades. They care only about the time they are in power.. Leaders & Leadership
We are the product of 4.5 billion years of fortuitous, slow biological evolution. There is no reason to think that the evolutionary process has stopped. Man is a transitional animal. He is not the climax of creation. Science, Mathematics, Engineering & Technology
We know who speaks for the nations. But who speaks for humanity? Who speaks for earth? Miscellaneous
A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism.
All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year. Not all bits have equal value. Science, Mathematics, Engineering & Technology
But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright Brothers. But they also laughed at Bozo the Clown.
Extinction is the rule. Survival is the exception.
For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
For small creatures such as we the vastness is bearable only through love. Love, Romance, Marriage & Sex
I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students. Education, Learning, Knowledge & Training ;Science, Mathematics, Engineering & Technology
I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star.
If we long to believe that the stars rise and set for us, that we are the reason there is a Universe, does science do us a disservice in deflating our conceits? Science, Mathematics, Engineering & Technology
If you wish to make an apple pie from scratch, you must first invent the universe. Nature
Imagination will often carry us to worlds that never were. But without it we go nowhere.
It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.
Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out. Education, Learning, Knowledge & Training ;Life ;Death
Science is a way of thinking much more than it is a body of knowledge. Education, Learning, Knowledge & Training ;Science, Mathematics, Engineering & Technology
Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense. Religion & God ;Science, Mathematics, Engineering & Technology
Somewhere, something incredible is waiting to be known. Inspiration
The brain is like a muscle. When it is in use we feel very good. Understanding is joyous. Intelligence, Spying, Espionage & Covert Operations
The universe seems neither benign nor hostile, merely indifferent.
We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces. Power ;Science, Mathematics, Engineering & Technology
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology. Society ;Science, Mathematics, Engineering & Technology
We've arranged a civilization in which most crucial elements profoundly depend on science and technology. Science, Mathematics, Engineering & Technology
When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it.
Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.