The Earth is the only world known so far to harbor life.
CARL SAGANThere are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
More Carl Sagan Quotes
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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.
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Other things being equal, it is better to be smart than to be stupid.
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Nature is unsentimental. Death is built in.
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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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What an astonishing thing a book is.
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Where we have strong emotions, we’re liable to fool ourselves.
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I’ve always thought an agnostic is an atheist without the courage of his convictions.
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Science is not only compatible with spirituality; it is a profound source of spirituality.
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Understanding is a kind of ecstasy.
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We are all stardust.
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Nature is always more subtle, more intricate, more elegant than what we are able to imagine.
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Any faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.
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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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Better the hard truth, I say, than the comforting fantasy.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
CARL SAGAN