“A huge dog, tied by a chain, was painted on the wall and over it was written in capital letters ‘Beware of the dog.”
Sec. 29
Satyricon
Original
Canis ingens, catena vinctus, in pariete erat pictus superque quadrata littera scriptum ‘Cave canem.’
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Petronius 11
Roman courtier, supposed author of the Satyricon 27–66Related quotes

“Brothers and Sisters, I bid you beware
Of giving your heart to a dog to tear.”
The Power of the Dog, Stanza 1 (1909).
Other works
“how do i get cowboy paint off a dog.”
[ Link to tweet https://twitter.com/dril/status/2299229204]
Tweets by year, 2009

“I am not a dog lover. A dog lover to me means a dog that is in love with another dog.”
"I Like Dogs", For Men (April 1939); reprinted in People Have More Fun Than Anybody (1994); slightly paraphrased in "And So to Medve", Thurber's Dogs (1955)
From other writings

Man wolle nicht scheinen was man nicht ist. Das Vorgeben unbefangener Wahrheitsforschung, mit dem Entschluß, die Landesreligion zum Resultat, ja zum Maaßstabe und zur Kontrole derselben zu machen, ist unerträglich, und eine solche, an die Landesreligion, wie der Kettenhund an die Mauer, gebundene Philosophie ist nur das ärgerliche Zerrbild der höchsten und edelsten Bestrebung der Menschheit.
Sämtliche Werke, Bd. 5, pp. 155–156, E. Payne, trans. (1974) Vol. 1, p. 143
Parerga and Paralipomena (1851), On Philosophy in the Universities

Source: Object-oriented design: With Applications, (1991), p. 124

Act i, scene 4
Queen Mary: A Drama (published 1876)

" Malcolm X: Make It Plain http://www.pbs.org/wgbh/amex/malcolmx/filmmore/pt.html," from The American Experience, season 6, episode 6, PBS (first aired 26 January 1994)
Attributed