“We look before and after,And pine for what is not;Our sincerest laughterWith some pain is fraught;Our sweetest songs are those that tellof saddest thought.” Stanza 18. “To A Skylark” [1821]Percy Bysshe Shelley [1792-1822]

Bartlett’s Familiar Quotations by John Bartlett. Little, Brown and Company. 1955. Page 467.

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