The Sea of Faith Was once, too, at the full, and round earth’s shore Lay like the folds of a bright girdle furled

The abbot asked, "You heard him say it?  'Pain's the only evil I know about.'  You heard that?"

The monk nodded solemnly.

"And that society is the only thing which determines an act is wrong or not? That too?"

"Yes."

"Dearest God, how did these two heresies get back into the world after all this time?"
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From  A Canticle for Leibowitz by Walter M. Miller Jr

The post title is from the poem Dover Beach by Matthew Arnold