You have to know the past to understand the present.
CARL SAGANWhere we have strong emotions, we’re liable to fool ourselves.
More Carl Sagan Quotes
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We are star stuff harvesting sunlight.
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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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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 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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Nature is unsentimental. Death is built in.
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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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One of the great commandments of science is: Mistrust arguments from authority.
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If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.
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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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Nothing disturbs me more than the glorification of stupidity.
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There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
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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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Don’t judge everyone else by your own limited experience.
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The significance of our lives and our fragile planet is then determined only by our own wisdom and courage.
CARL SAGAN