The poem that begins with the lines:
"Five years have past; five summers, with the length
Of five long winters!"
is "Tintern Abbey", officially titled "Lines Composed a Few Miles Above Tintern Abbey, on Revisiting the Banks of the Wye During a Tour, July 13, 1798" by William Wordsworth.
About the Poem:
Written in blank verse (unrhymed iambic pentameter).
A key poem in Romantic poetry, exploring memory, nature, and personal growth.
Wordsworth reflects on his return to Tintern Abbey after five years and how his perception of nature has changed.
Part of Lyrical Ballads (1798), co-authored with Samuel Taylor Coleridge, which marked the beginning of English Romanticism.