What poem contains the line, "Things fall apart; the center cannot hold"?

William Butler Yeats’s “The Second Coming” (1920) contains the line, “Things fall apart; the center cannot hold”.

What poem contains the line "Beauty is truth, truth beauty"? John Keats's "Ode on a Grecian Urn" (1819) contains the…
What language contains the most words? English is the wordiest language, with approximately 455,000 active words…
What was the name of the poem that later became the "Star-Spangled Banner"? The poem that later became the "Star-Spangled Banner" was written…
What ship was nicknamed "Old Ironsides" in the 1830 poem? The Constitution, a 44-gun frigate that defeated two British warships…
When was the Emma Lazarus poem "The New Colossus" added to the Statue of Liberty? Emma Lazarus (1849-87), a New York Jewish poet, wrote the…
What playwright wrote a play called Paradise Lost that was not based on Milton's poem? Clifford Odets wrote a play called Paradise Lost that was…

What poem contains the line, “Things fall apart; the center cannot hold”?