That it will never come again
Is what makes life so sweet.

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Notes from Wikiquote

Quoting Emily Dickinson; The Poems of Emily Dickinson, 3:1171, no. 1741

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Attribution

Quote text and notes from Wikiquote: Carl Sagan (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.