We are all stardust.
CARL SAGANWe live on a mote of dust suspended in a sunbeam.
More Carl Sagan Quotes
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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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Advances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.
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Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs.
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We live on a mote of dust suspended in a sunbeam.
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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.
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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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If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read.
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Other things being equal, it is better to be smart than to be stupid.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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Every star may be a sun to someone.
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One of the great commandments of science is: Mistrust arguments from authority.
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The universe seems neither benign nor hostile, merely indifferent.
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The visions we offer our children shape the future.
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Arguments 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.
CARL SAGAN







