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Top 500 Carl Sagan Quotes (2025 Update)

Carl Sagan Quote: “I don't want to believe. I want to know.”

1. “I don't want to believe. I want to know.”

Featured in: Science Quotes, Universe Quotes, Knowledge Quotes, Truth Quotes

Carl Sagan Quote: “The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself.”

2. “The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself.”

Featured in: Famous Quotes, Meaningful Quotes, Perspective Quotes, Science Quotes

Carl Sagan Quote: “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.”

3. “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.”

Featured in: Science Quotes, Universe Quotes, Thought Provoking Quotes, Powerful Quotes

Carl Sagan Quote: “We are a way for the cosmos to know itself.”

4. “We are a way for the cosmos to know itself.”

Featured in: Deep Quotes About Life, Interesting Quotes, Short Inspiring Quotes, Science Quotes

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

5. “We are like butterflies who flutter for a day and think it is forever.”

Featured in: Life Quotes, Deep Quotes About Life, Famous Quotes, Meaningful Quotes

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

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

Featured in: Science Quotes, Universe Quotes, Space Quotes

Carl Sagan Quote: “Imagination will often carry us to worlds that never were. But without it we go nowhere.”

7. “Imagination will often carry us to worlds that never were. But without it we go nowhere.”

Featured in: Life Quotes, Inspirational Life Quotes, Science Quotes, Imagination Quotes

Carl Sagan Quote: “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.”

8. “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.”

Featured in: Learning Quotes, Science Quotes, Quotes About Thinking, Knowledge Quotes

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

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

Carl Sagan Quote: “If you wish to make an apple pie from scratch, you must first invent the universe.”

10. “If you wish to make an apple pie from scratch, you must first invent the universe.”

Featured in: Science Quotes, Thought Provoking Quotes, Imagination Quotes, Creative Quotes

Carl Sagan Quote: “The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars.”

11. “The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars.”

Featured in: Universe Quotes, Future Quotes, Thought Provoking Quotes, Moving Forward Quotes

Carl Sagan Quote: “We are star stuff which has taken its destiny into its own hands.”

12. “We are star stuff which has taken its destiny into its own hands.”

Featured in: Famous Quotes, Science Quotes, Thought Provoking Quotes

Carl Sagan Quote: “For small creatures such as we the vastness is bearable only through love.”

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

Featured in: Interesting Quotes, Emotional Quotes, Emotion Quotes, Universe Quotes

Carl Sagan Quote: “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.”

14. “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.”

Featured in: Positive Inspirational Quotes, Short Inspiring Quotes, Meaningful Quotes, Perspective Quotes

Carl Sagan Quote: “Across the sea of space, the stars are other suns.”

15. “Across the sea of space, the stars are other suns.”

Featured in: Science Quotes, Universe Quotes, Thought Provoking Quotes, Space Quotes

Carl Sagan Quote: “In all our searching, the only thing we've found that makes the emptiness bearable is each other.”

16. “In all our searching, the only thing we've found that makes the emptiness bearable is each other.”

Featured in: Relationship Quotes, Emotional Quotes, Quotes About Humanity, Compassion Quotes

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

17. “The universe seems neither benign nor hostile, merely indifferent.”

Featured in: Science Quotes, Space Quotes

Carl Sagan Quote: “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.”

18. “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.”

Featured in: Perspective Quotes, Science Quotes, Quotes About the World

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

19. “Science is a way of thinking much more than it is a body of knowledge.”

Featured in: Short Quotes, Science Quotes, Quotes About Thinking, Knowledge Quotes

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

20. “The absence of evidence is not the evidence of absence.”

Carl Sagan Quote: “You are made of a hundred trillion cells. We are, each of us, a multitude.”

21. “You are made of a hundred trillion cells. We are, each of us, a multitude.”

Carl Sagan Quote: “You have to know the past to understand the present.”

22. “You have to know the past to understand the present.”

Featured in: Knowledge Quotes, Past Quotes

Carl Sagan Quote: “If it can be destroyed by the truth, it deserves to be destroyed by the truth.”

23. “If it can be destroyed by the truth, it deserves to be destroyed by the truth.”

Carl Sagan Quote: “We are made of star-stuff. Our bodies are made of star-stuff. There are pieces of star within us all.”

24. “We are made of star-stuff. Our bodies are made of star-stuff. There are pieces of star within us all.”

Featured in: Interesting Quotes, Science Quotes, Universe Quotes, Space Quotes

Carl Sagan Quote: “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.”

25. “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.”

Featured in: Science Quotes, Universe Quotes, Future Quotes, Space Quotes

Carl Sagan Quote: “We began as wanderers, and we are wanderers still.”

26. “We began as wanderers, and we are wanderers still.”

Featured in: Universe Quotes, Moving Quotes, Space Quotes, Travel Quotes

Carl Sagan Quote: “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.”

27. “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.”

Featured in: Time Quotes, Quotes About Books And Reading, Book Quotes

Carl Sagan Quote: “Your god is too small for my universe.”

28. “Your god is too small for my universe.”

Carl Sagan Quote: “We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.”

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

Featured in: Science Quotes, Technology Quotes

Carl Sagan Quote: “Preserve and cherish the pale blue dot, the only home we’ve ever known.”

30. “Preserve and cherish the pale blue dot, the only home we’ve ever known.”

Featured in: Science Quotes, Environment Quotes, Quotes About the World, Earth Day Quotes

Carl Sagan Quote: “Don’t judge everyone else by your own limited experience.”

31. “Don’t judge everyone else by your own limited experience.”

Featured in: Judging Quotes

Carl Sagan Quote: “Extinction is the rule. Survival is the exception.”

32. “Extinction is the rule. Survival is the exception.”

Featured in: Environment Quotes

Carl Sagan Quote: “Who are we, if not measured by our impact on others? That’s who we are! We’re not who we say we are, we’re not who we want to be – we are the sum of the influence and impact that we have, in our lives, on others.”

33. “Who are we, if not measured by our impact on others? That’s who we are! We’re not who we say we are, we’re not who we want to be – we are the sum of the influence and impact that we have, in our lives, on others.”

Carl Sagan Quote: “After the earth dies, some 5 billion years from now, after it’s burned to a crisp, or even swallowed by the Sun, there will be other worlds and stars and galaxies coming into being – and they will know nothing of a place once called Earth.”

34. “After the earth dies, some 5 billion years from now, after it’s burned to a crisp, or even swallowed by the Sun, there will be other worlds and stars and galaxies coming into being – and they will know nothing of a place once called Earth.”

Featured in: Science Quotes, Quotes About Stars

Carl Sagan Quote: “The Cosmos is all that is or ever was or ever will be.”

35. “The Cosmos is all that is or ever was or ever will be.”

Featured in: Deep Quotes, Science Quotes, Universe Quotes, Quotes About the World

Carl Sagan Quote: “All civilizations become either spacefaring or extinct.”

36. “All civilizations become either spacefaring or extinct.”

Featured in: Science Quotes, Space Quotes, Quotes About Civilization

Carl Sagan Quote: “Understanding is a kind of ecstasy.”

37. “Understanding is a kind of ecstasy.”

Featured in: Understanding Quotes

Carl Sagan Quote: “Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves.”

38. “Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves.”

Featured in: Universe Quotes, Space Quotes, Lonely Quotes

Carl Sagan Quote: “Science is more than a body of knowledge. It’s a way of thinking: a way of skeptically interrogating the universe.”

39. “Science is more than a body of knowledge. It’s a way of thinking: a way of skeptically interrogating the universe.”

Featured in: Science Quotes, Quotes About the Body

Carl Sagan Quote: “Even through your hardest days, remember we are all made of stardust.”

40. “Even through your hardest days, remember we are all made of stardust.”

Carl Sagan Quote: “Writing is perhaps the greatest of human inventions, binding together people who never knew each other, citizens of distant epochs. Books break the shackles of time. A book is proof that humans are capable of magic.”

41. “Writing is perhaps the greatest of human inventions, binding together people who never knew each other, citizens of distant epochs. Books break the shackles of time. A book is proof that humans are capable of magic.”

Featured in: Quotes About Books And Reading, Creative Quotes, Culture Quotes, Book Quotes

Carl Sagan Quote: “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.”

42. “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.”

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

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

Featured in: Knowledge Quotes, Feel Better Quotes, Intelligence Quotes, Quotes About the Brain

Carl Sagan Quote: “The cure for a fallacious argument is a better argument, not the suppression of ideas.”

44. “The cure for a fallacious argument is a better argument, not the suppression of ideas.”

Featured in: Science Quotes, Knowledge Quotes, Quotes About Ideas

Carl Sagan Quote: “To live in the hearts of others is to never die in those we leave behind.”

45. “To live in the hearts of others is to never die in those we leave behind.”

Carl Sagan Quote: “Every star may be a sun to someone.”

46. “Every star may be a sun to someone.”

Featured in: Science Quotes, Quotes About Stars

Carl Sagan Quote: “The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.”

47. “The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.”

Featured in: Science Quotes

Carl Sagan Quote: “There are naive questions, tedious questions, ill-phrased questions, questions put after inadequate self-criticism. But every question is a cry to understand the world. There is no such thing as a dumb question.”

48. “There are naive questions, tedious questions, ill-phrased questions, questions put after inadequate self-criticism. But every question is a cry to understand the world. There is no such thing as a dumb question.”

Featured in: Lifelong Learning Quotes, Science Quotes, Different Quotes, Curiosity Quotes

Carl Sagan Quote: “It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.”

49. “It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.”

Featured in: Science Quotes, Universe Quotes, Knowledge Quotes, Truth Quotes

Carl Sagan Quote: “The notion that science and spirituality are somehow mutually exclusive does a disservice to both.”

50. “The notion that science and spirituality are somehow mutually exclusive does a disservice to both.”

Featured in: Science Quotes

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