"A picture is worth a thousand words" is an English language adage. It refers to the notion that a complex idea can be conveyed with just a single picture, this picture conveys its meaning or essence more effectively than a description does.
In March 1911, the Syracuse Advertising Men's Club held a banquet to discuss journalism and publicity. In an article on The Post-Standard covering this event, the author quoted Arthur Brisbane as saying: "Use a picture. It's worth a thousand words." 
Early use of the exact phrase appears in a 1918 newspaper advertisement for the San Antonio Light, which says:
One of the Nation's Greatest Editors Says:
One Picture is Worth a Thousand Words
The San Antonio Light's Pictorial Magazine of the War
Exemplifies the truth of the above statement—judging from the warm
the reception it has received at the hands of the Sunday Light readers.
The modern use of the phrase is generally attributed to Fred R. Barnard. Barnard wrote this phrase in the advertising trade journal Printers' Ink, promoting the use of images in advertisements that appeared on the sides of streetcars. The December 8, 1921, issue carries an ad entitled, "One Look is Worth A Thousand Words." Another ad by Barnard appears in the March 10, 1927, issue with the phrase "One Picture Worth Ten Thousand Words", where it is labeled a Chinese proverb. The 1949 Home Book of Proverbs, Maxims, and Familiar Phrases quotes Barnard as saying he called it "a Chinese proverb, so that people would take it seriously." Nonetheless, the proverb soon after became popularly attributed to Confucius. The actual Chinese expression "Hearing something a hundred times isn't better than seeing it once" (百闻不如一见, p bǎi wén bù rú yī jiàn) is sometimes introduced as an equivalent, as Watts's "One showing is worth a hundred sayings". This was published as early as 1966 discussing persuasion and selling in a book on engineering design.
Despite this modern origin of the popular phrase, the sentiment has been expressed by earlier writers. For example, the Russian writer Ivan Turgenev wrote (in Fathers and Sons in 1861), "The drawing shows me at one glance what might be spread over ten pages in a book." The quote is sometimes attributed to Napoleon Bonaparte, who said "A good sketch is better than a long speech" (French: Un bon croquis vaut mieux qu'un long discours). This is sometimes translated today as "A picture is worth a thousand words."
- "Speakers Give Sound Advice". Syracuse Post Standard. page 18. March 28, 1911.
- "One Look Is Worth A Thousand Words". Piqua Leader-Dispatch. page 2. August 15, 1913.
- "Pictorial Magazine of the War (advertisement)". San Antonio Light. page 6. January 10, 1918.
- "The history of a picture's worth". Retrieved July 12, 2008.
- Stevenson, Burton (1949). Stevenson’s book of proverbs, maxims and familiar phrases. London: Routledge and Kegan Paul. p. 2611.
Quoted from Ole Bjørn Rekdal (2014). "Academic Citation Practice: A Sinking Sheep?" (PDF). portal: Libraries and the Academy. Johns Hopkins University Press. 14 (4): 575, 577, 578, 584.see also "The history of a picture's worth". uregina.ca. Retrieved November 6, 2016.
contains pictures and transcriptions of the original ads
- Watts, Alan. "The Way of Zen"
- Woodson, Thomas T. (1966) Introduction to Engineering Design. McGraw-Hill Technology & Engineering – 434 pages
- Turgenev, Ivan. "16". Fathers and Sons. Retrieved September 29, 2015.
- McCarthy, John. "The sayings of John McCarthy (1 March 2007)". Archived from the original on October 14, 2007. Retrieved November 9, 2007.
- The Dictionary of Clichés by James Rogers (Ballantine Books, New York, 1985).
- King, David (October 15, 1997). The Commissar Vanishes: The Falsification of Photographs and Art in Stalin's Russia (Hardcover). New York, NY: Metropolitan Books; 1 edition (October 15, 1997). pp. 192 pages. ISBN 0805052941. Retrieved December 22, 2016.