The significance of our lives and our fragile planet is then determined only by our own wisdom and courage.
CARL SAGANArguments from authority carry little weight, authorities have made mistakes in the past. They will do so again in the future. Perhaps a better way to say it is that in science there are no authorities; at most, there are experts.
More Carl Sagan Quotes
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The Earth is a very small stage in a vast cosmic arena.
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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.
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For small creatures such as we the vastness is bearable only through love.
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Nature is always more subtle, more intricate, more elegant than what we are able to imagine.
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Stars are phoenixes, rising from their own ashes.
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An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God.
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Where we have strong emotions, we’re liable to fool ourselves.
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Not all birds can fly. What separates the flyers from the walkers is the ability to take off.
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The only thing we’ve found that makes the emptiness bearable, is each other.
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There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
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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.
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The price we pay for anticipation of the future is anxiety about it.
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We are a way for the cosmos to know itself.
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We all have a thirst for wonder. It’s a deeply human quality. Science and religion are both bound up with it.
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All civilizations become either spacefaring or extinct.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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The universe is not required to be in perfect harmony with human ambition.
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Be grateful everyday for the brief but magnificent opportunity that life provides.
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Writing is the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another.
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Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.
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The cure for a fallacious argument is a better argument, not the suppression of ideas.
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Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.
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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.
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The visions we offer our children shape the future.
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Not explaining science seems to me perverse. When you’re in love, you want to tell the world.
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We are star stuff which has taken its destiny into its own hands.
CARL SAGAN