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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...more

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In the vastness of space and the immensity of time, it is my joy to share a planet and an epoch with Annie.[Dedication to Sagan's wife, Ann Druyan, in...more

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In all our searching, the only thing we've found that makes the emptiness bearable is each other.

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Does trying to understand the universe at all betray a lack of humility? I believe it is true that humility is the only just response in a confrontati...more

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To live in the hearts we leave behind is to live forever.