Carl Sagan Quotes

Enjoy the top 844 famous quotes, sayings and quotations by Carl Sagan.

Carl Sagan Quotes

Some 5 billion years from now, there will be a last perfect day on Earth ... then the sun will begin to die, life will be extinguished, the oceans will boil and evaporate away.
— Carl Sagan —

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

— Carl Sagan

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.

— Carl Sagan

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.

— Carl Sagan

The others would then fall silent and she would continue about doped gallium arsenide detectors, or the ethanol content of the galactic cloud W-3. The quantity of 200-proof alcohol in this single interstellar cloud was more than enough to maintain the present population of the Earth, if every adult were a dedicated alcoholic, for the age of the solar system. The tamada had appreciated the remark.

— Carl Sagan

If you grow up in a household where there are books, where you are read to, where parents, siblings, aunts, uncles, and cousins read for their own pleasure, naturally you learn to read. If no one close to you takes joy in reading, where is the evidence that it's worth the effort?

— Carl Sagan

If anything like this is true, then we would be denied even our self-congratulatory distinction of being the only animal that makes self-congratulatory distinctions.

— Carl Sagan

There are a vast number of stars within our galaxy. The number is not so large as the number of cometary nuclei around the Sun but is nevertheless hardly modest. It's about 400 billion stars, of which the Sun is one.

— Carl Sagan

When you buy a used car, you kick the tires, you look at the odometer, you open up the hood. If you do not feel yourself an expert in automobile engines, you bring a friend who is. And you do this with something as unimportant as an automobile. But on the issues of the transcendent, of ethics, of morals, of the origins of the world, of the nature of human beings, on those issues should we not insist upon at least equally skeptical scrutiny?

— Carl Sagan

Books tap the wisdom of our species
the greatest minds, the best teachers
from all over the world and from all our history. And they're patient.

— Carl Sagan

There are many hypotheses in physics of almost comparable brillance and elegance that have been rejected because they did not survive such a confrontation with experiment. In my view, the human condition would be greatly improved if such confrontations and willingness to reject hypotheses were a regular part of our social, political, economic, religious and cultural lives.

— Carl Sagan

I find science so much more fascinating than science fiction. It also has the advantage of being true.

— Carl Sagan

There are lots of ways to communicate what we know, but few ways to communicate what we feel. Music is one way to communicate emotions.

— Carl Sagan

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