The absence of evidence is not evidence of absence.
CARL SAGANAdvances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.
More Carl Sagan Quotes
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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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We live in a vast and awesome universe in which, daily, suns are made and worlds destroyed, where humanity clings to an obscure clod of rock.
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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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We live on a mote of dust suspended in a sunbeam.
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One of the great commandments of science is: Mistrust arguments from authority.
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Science is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course.
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People are not stupid. They believe things for reasons.
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If it can be destroyed by the truth, it deserves to be destroyed by the truth.
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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 universe seems neither benign nor hostile, merely indifferent.
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The universe is not required to be in perfect harmony with human ambition.
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All over the world there are enormous numbers of smart, even gifted, people who harbor a passion for science.
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Understanding is a kind of ecstasy.
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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.
CARL SAGAN -
Every star may be a sun to someone.
CARL SAGAN