There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
CARL SAGANKnowing 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.
More Carl Sagan Quotes
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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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The absence of evidence is not evidence of absence.
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For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
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Books break the shackles of time, proof that humans can work magic.
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Don’t judge everyone else by your own limited experience.
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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.
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The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of the Cosmos.
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Nature is unsentimental. Death is built in.
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We are star stuff harvesting sunlight.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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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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We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
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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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If you wish to make an apple pie from scratch, you must first invent the universe.
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We are like butterflies who flutter for a day and think it is forever.
CARL SAGAN