40 Inspiring Carl Sagan Quotes

Carl Sagan (November 9, 1934 – December 20, 1996) best known for his work as a science popularizer and communicator.

Following are the Carl Sagan quotes with images.

Carl Sagan Quotes


“Extraordinary claims require extraordinary evidence.” » Carl Sagan


“The absence of evidence is not the evidence of absence.” » Carl Sagan


“A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism.” » Carl Sagan


“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.” » 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 are like butterflies who flutter for a day and think it is forever.” » Carl Sagan


“I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students.” » Carl Sagan


“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.” » Carl Sagan


Space Quotes, Quotes about Cosmonautics and Astronauts


“Absence of evidence is not evidence of absence.” » Carl Sagan


“Science is a way of thinking much more than it is a body of knowledge.” » Carl Sagan


“The universe is a pretty big place. If it’s just us, seems like an awful waste of space.” » Carl Sagan


“Who is more humble? The scientist who looks at the universe with an open mind and accepts whatever the universe has to teach us, or somebody who says everything in this book must be considered the literal truth and never mind the fallibility of all the human beings involved?” » Carl Sagan



“Science is not only compatible with spirituality; it is a profound source of spirituality.” » Carl Sagan


“But I try not to think with my gut. If I’m serious about understanding the world, thinking with anything besides my brain, as tempting as that might be, is likely to get me into trouble.” » Carl Sagan


“Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense.” » Carl Sagan


“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.” » 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


“Somewhere, something incredible is waiting to be known.” » Carl Sagan


“For small creatures such as we the vastness is bearable only through love.” » 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



“What a marvelous cooperative arrangement – plants and animals each inhaling each other’s exhalations, a kind of planet-wide mutual mouth-to-stoma resuscitation, the entire elegant cycle powered by a star 150 million kilometers away.” » Carl Sagan


“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.” » Carl Sagan


“The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five.” » Carl Sagan


“The universe is not required to be in perfect harmony with human ambition.” » Carl Sagan


“When you make the finding yourself – even if you’re the last person on Earth to see the light – you’ll never forget it.” » 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


“If you want to make an apple pie from scratch, you must first create the universe.” » Carl Sagan


“I would love to believe that when I die I will live again, that some thinking, feeling, remembering part of me will continue. But as much as I want to believe that, and despite the ancient and worldwide cultural traditions that assert an afterlife, I know of nothing to suggest that it is more than wishful thinking.” » Carl Sagan



36 Beautiful Osho Quotes about Life


“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.” » Carl Sagan


“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.” » Carl Sagan


“The universe seems neither benign nor hostile, merely indifferent.” » Carl Sagan


“Better the hard truth, I say, than the comforting fantasy.” » Carl Sagan


“It pays to keep an open mind, but not so open your brains fall out.” » Carl Sagan


“We’re made of star stuff. We are a way for the cosmos to know itself.” » Carl Sagan


“The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.” » Carl Sagan


“Extinction is the rule. Survival is the exception.” » Carl Sagan



“Imagination will often carry us to worlds that never were, but without it we go nowhere.” » Carl Sagan


“We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.” » 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


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