“620. An idle Person is the Devil's Playfellow.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)
Variant: 3054. Idle Fellows are the Devil's Playfellows.
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Thomas Fuller (writer) 420
British physician, preacher, and intellectual 1654–1734Related quotes
“I decided that the devil finds work for idle hands and thanked him for his suggestion.”
Home is the Hangman (1975)
As quoted in Exclusive: Dennis Nilsen: My Prison Life of Drink and Drugs http://www.mirror.co.uk/news/uk-news/exclusive-dennis-nilsen-prison-life-555104, Mirror.co.uk (27 August, 2005)

"The Jelly-Bean"
Quoted, Tales of the Jazz Age (1922)
“Personally I regard idling as a virtue, but civilized society holds otherwise.”
Source: The Sex Lives of Cannibals: Adrift in the Equatorial Pacific

“A faculty for idleness implies a catholic appetite and a strong sense of personal identity.”
An Apology for Idlers.
Virginibus Puerisque and Other Papers (1881)

The Ageless Wisdom, An Introduction to Humanity's Spiritual Legacy (1996)

“A witch is a person who hath conference with the Devil to consult with him or to do some act.”
Reported in Margaret Alice Murray, The Witch-Cult in Western Europe: A Study in Anthropology (2007) p. 18.
Attributed

Original: (it) Una persona completa, all'occorrenza, sa mostrare la sua essenza di innocente angelo o pericoloso diavolo.
Source: prevale.net