Top 25 Carl Sagan Quotes

1) “Somewhere, something incredible is waiting to be known.”

2) “Science is not only compatible with spirituality; it is a profound source of spirituality.”

3) “Extraordinary claims require extraordinary evidence.”

4) “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.”

5) “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?”

6) “For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.”

7) “The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be consonant with what we desperately want to be true. But our preferences do not determine what’s true.”

8) “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.”

9) “We are like butterflies that flutter for a day and think it is forever."

10) “How is it that hardly any major religion has looked at science and concluded, ‘This is better than we thought! The Universe is much bigger than our prophets said, grander, more subtle, more elegant?’ Instead they say, ‘No, no, no! My god is a little god, and I want him to stay that way.’”

11) “Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.”

12) “You can’t convince a believer of anything; for their belief is not based on evidence, it’s based on a deep seated need to believe.”

13) “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.”

14) “Humans are very good at dreaming, although you’d never know it from your television.”

15) “The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.”

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

17) “The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies was made in the interiors of collapsing stars. We are made of star stuff.”

18) “Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact.”

19) “Absence of evidence is not evidence of absence.”

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

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

22) “We are one species. We are starstuff.”

23) “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.”

24) “One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.”

25) “We on Earth have just awakened to the great oceans of space and time from which we have emerged. We are the legacy of 15 billion years of cosmic evolution.”