In "The Second Coming", Yeats wrote that this "cannot hold; mere anarchy is loosed upon the world"
Among other 
things, The Second Coming takes its imagery from Yeats's book, ... the centre 
cannot hold; Mere anarchy is loosed upon the world, The blood-dimmed tide is... [DOC] [TLE] "The Second Coming" and "A Vision" - Yeats's Vision [PAR] 'The Second Coming' was written in January 1919, according to what George 
Yeats told Richard Ellmann (The Identity of Yeats), and first appeared in The Dial
... [DOC] [TLE] William Butler Yeats' Poem "The Second Coming" Analyzed [PAR] Yeats starts out with the image of a falcon wheeling about in the sky, far away ... 
cannot hold; Mere anarchy is loosed upon the world, The blood-dimmed tide is... [DOC] [TLE] William Butler Yeats - Biography and Works.