"The devil is in the details" is an idiom alluding to a catch or mysterious element hidden in the details; it indicates that "something may seem simple, but in fact the details are complicated and likely to cause problems". It comes from the earlier phrase "God is in the details", expressing the idea that whatever one does should be done thoroughly; that is, details are important.
The idiom "God is in the details" has been attributed to a number of people, most notably to the German-born architect Ludwig Mies van der Rohe (1886–1969) by The New York Times in Mies's 1969 obituary; however, it is generally accepted not to have originated with him. A German version, Der liebe Gott steckt im Detail, is widely attributed to the German art historian Aby Warburg (1866–1929). According to Christopher Johnson, Der liebe Gott steckt im Detail was the subtitle of a seminar Warburg taught at the University of Hamburg in the winter of 1925-26. A French version of the saying, "Le bon Dieu est dans le détail" (literally "the good God is in the detail") is generally attributed to Gustave Flaubert (1821–1880). The expression "the devil is in the details" is found in a 1963 history of post-war European integration. It is later attested in 1965. In 1969, it is referred to as an existing proverb. Bartlett's Familiar Quotations lists the saying's author as anonymous. An editorial in the 1989 New York Times reflected on the apparent interchangeability of God and the Devil in the phrase, citing various examples in print at the time; as well as the difficulty of determining which came first and how long either one has been in use.
The phrase has several variants: (the/a) Devil (is) in the detail(s). The original expression as, "God is in the detail" with the word detail being singular, colloquial usage often ends the idiom as details plural; where the word detail without an s can be used as both a singular and collective noun.
More recently, the expressions "governing is in the details" and "the truth, if it exists, is in the details" have appeared.
- Titelman, Gregory (1996). Random House Dictionary of Popular Proverbs and Sayings. Random House Reference. p. 119. ISBN 0-679-44554-4.
- "The devil is in the detail". Macmillan Dictionary. Retrieved 11 February 2022.
- Johnson, Christopher D. (2012). Memory, Metaphor, and Aby Warburg's Atlas of Images. Cornell University Press. p. 45. ISBN 978-0-8014-7742-3.
The seminar 'Die Bedeutung der Antike für den stilistischen Wandel in der italienischen Kunst der Frührenaissance,' WIA, III.95.1, given at the University of Hamburg in the winter semester of 1925-26, was subtitled 'Der liebe Gott steckt im Detail.'The abbreviation 'WIA' refers to unpublished material held at the Warburg Institute Archive.
- Mayne, Richard (1963). The Community of Europe. New York: W. W. Norton. p. 92.
...on the principle that 'the devil is in the details', what should have been a merely formal occasion developed into a debate...
- Newsweek. Vol. 65, no. 1. Newsweek Inc. 1965. p. 173.
- Electrical Safety: Portable Tools and Mobile Appliances; Proceedings of a Symposium. International Labour Office. 1969. p. 102.
- Bartlett, John (November 2002). Bartlett's Familiar Quotations (17th ed.). Little, Brown and Company.
- Safire, William (30 July 1989). "On Language; Who's in Those Details?". The New York Times. ISSN 0362-4331.
- "Detail". Dictionary.com. Retrieved 2012-07-15.
- "US increases fiscal-stimulus offer to $1.8 trillion to fight COVID-19: Report". mint.com. 9 October 2020. Retrieved 2020-10-10.