Carl Sagan Quotes

Carl Sagan Quotes.

We start out a million years ago in a small community o

We start out a million years ago in a small community on some grassy plain; we hunt animals, have children, and develop a rich social, sexual, and intellectual life, but we know almost nothing about our surroundings.
Carl Sagan
No other planet in the solar system is a suitable home for human beings; it’s this world or nothing. That’s a very powerful perception.
Carl Sagan
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?
Carl Sagan
The boundary between space and the earth is purely arbitrary. And I’ll probably always be interested in this planet – it’s my favorite.
Carl Sagan
There is a wide, yawning black infinity. In every direction, the extension is endless; the sensation of depth is overwhelming. And the darkness is immortal. Where light exists, it is pure, blazing, fierce; but light exists almost nowhere, and the blackness itself is also pure and blazing and fierce.
Carl Sagan
For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
Carl Sagan
We live in a society exquisitely dependent on science a

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
Carl Sagan
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.
Carl Sagan
Absence of evidence is not evidence of absence.
Carl Sagan
It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.
Carl Sagan
A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism.
Carl Sagan
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.
Carl Sagan
Most of the people that I deal with are human. So I've

Most of the people that I deal with are human. So I’ve had a lot of experience with that.
Carl Sagan
I promise to question everything my leaders tell me. I promise to use my critical faculties. I promise to develop my independence of thought. I promise to educate myself so I can make my own judgments.
Carl Sagan