PIETY, n. Reverence for the Supreme Being, based upon His supposed resemblance to man.

Ambrose Bierce (1842-1914?) American writer and journalist

“Piety,” The Devil’s Dictionary (1911)
    (Source)

See Voltaire.

Originally published in the "Cynic's Word Book" column in the New York American (1905-01-27) and the "Cynic's Dictionary" column in the San Francisco Examiner (1905-02-05).