[pgkdan]

Turning and turning in the widening gyre
The falcon cannot hear the falconer;
Things fall apart; the centre cannot hold;
Mere anarchy is loosed upon the world,
The blood-dimmed tide is loosed, and everywhere
The ceremony of innocence is drowned.
The best lack all conviction, while the worst
Are full of passionate intensity.

[PUGACHEV]

... and what rough beast, its hour come round at last, slouches toward Bethlehem to be born.

[Louis Foxwell]

Nick Tabor's wonderful article in The Paris Review on Yeat's poem is well worth the read.

http://www.theparisreview.org/blog/2015/04/07/no-slouch/