Yeats The Second Coming

All of these lines appear in W. B. Yeats's "The Second Coming".

"And what rough beast, its hour come round at last, / Slouches towards Bethlehem to be born?"

"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."

"The darkness drops again but now I know / That twenty centuries of stony sleep / Were vexed to nightmare by a rocking cradle."