IDLENESS, n. A model farm where the devil experiments with seeds of new sins and promotes the growth of untried vices.
Ambrose Bierce (1842–1914?) American writer and journalist
“Idleness,” The Cynic’s Word Book (1906)
(Source)
Included in The Devil's Dictionary (1911). Originally published in the "Devil's Dictionary" column in the San Francisco Wasp (1885-08-29).

