2] “For Sale, Baby Shoes, Never Worn.” - Ernest Hemingway
The first one, attributed to Woodrow Wilson, is real. A definitive source for it is the first footnote in a CIA web article by Mark E. Benbow titled All the Brains I can Borrow: Woodrow Wilson and Intelligence Gathering in Mexico, 1913-1915.
The second one, supposedly from Ernest Hemingway, is actually fake. Garson O’Toole discussed it in a 2013 web article at his Quote Investigator site, and it also is in his 2017 book titled Hemingway Didn’t Say That - the truth behind familiar quotations.
There are at least four other books that discuss the dubious nature of some quotations. In 1989 there was Paul F. Boller, Jr. and John George’s They Never Said It a book of fake quotes, misquotes, and misleading attributions. In 1992 there was Ralph Keyes’s “Nice guys finish seventh”: False phrases, spurious sayings, and familiar misquotations. In 2006 there was another Ralph Keyes book, The Quote Verifier; who said what, where, and when and also Elizabeth Knowles’s What They Didn’t Say a book of misquotations.
Quotes have a bad habit of changing wildly, like in the parlor game we call Telephone in the U.S., but that Wikipedia calls Chinese whispers where:
“one person whispers a message to the ear of the next person through a line of people until the last player announces the message to the entire group.”
The description of Mr. Keye’s 1992 book at Amazon notes some mechanisms for change:
“Freud may never have said ‘Sometimes a cigar is just a cigar,’ for example, but we certainly wish he had. Keyes calls this ‘the flypaper effect.’ Orphan quotes or comments by unknowns routinely gravitate to noted figures such as Churchill, Lincoln, or Twain. Other syndromes Keyes discusses include bumper stickering (condensing a long comment to make it more quotable), lip syncing (mouthing someone else's words as if they were your own), and retro-quoting (putting words in the mouths of famous dead people).”
I first used a slightly incorrect version of the Wilson quote in a June 14, 2008 blog post titled QUOTATIONS: “I use not only all the brains I have, but all I can borrow.”
The image of a shrug was adapted from one at Openclipart.