Henry Wadsworth Longfellow Quotes about Growth

Henry Wadsworth Longfellow (1888). “Longfellow's Days: The Longfellow Prose Birthday Book : Extracts from the Journals and Letters of H. W. Longfellow”
Our pleasures and our discontents, Are rounds by which we may ascend.
Henry Wadsworth Longfellow (1867). “The Poetical Works of H. W. Longfellow. Complete Edition”, p.273