
“507. All Cats are alike grey in the Night.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)
First Week, First Day. Compare: "Come civil night,… with thy black mantle", William Shakespeare, Romeo and Juliet, act iii. sc. 2.
La Semaine; ou, Création du monde (1578)
“507. All Cats are alike grey in the Night.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)
Source: Don Quixote de la Mancha (1605–1615), Part I, Book III, Ch. 6.
Murray Rothbard, “The Noblest Cause of All,” Address to the Libertarian Party Convention (1977), Lewrockwell.com https://www.lewrockwell.com/1970/01/murray-n-rothbard/the-noblest-cause-of-all/
Christmas Song, reported in Bartlett's Familiar Quotations, 10th ed. (1919).
Robert Motherwell, partly quoting Jean Arp, in Motherwell & black (1981) p. 94 -->
Misattributed