A walking path at the IBM Poughkeepsie site, with the word "THINK" engraved.
"THINK" is a motto coined by Thomas J. Watson in December, 1911, while managing the sales and advertising departments at the National Cash Register Company. At an uninspiring sales meeting Watson interrupted, saying The trouble with every one of us is that we don't think enough. We don't get paid for working with our feet — we get paid for working with our heads. Watson then wrote THINK on the easel.
"THINK" entered the popular culture, often in a humorous context. For early examples, see Corey Ford'sGuide to Thimking.Mad magazine also used a "THIMK" parody motto  along with using the word directly on the cover of the last Mad comic book issue #23 from May 1955.
^Engelbourg, Saul (1954). International Business Machines: A Business History (Ph.D.). Columbia University. pp. 103–105. Reprinted by Arno Press, 1976, from the best available copy. Some text is illegible.
^Aswad, Ed; Meredith, Suzanne M. (2005). IBM in Endicott. Arcadia. p. 18.
^Cousins, Robert (ed) (1957). The Will to THINK: A Treasury of Ideas and Ideals from the Pages of THINK. Farrar, Straus and Cudahy. The books introduction, The Thinking Man, was written by Thomas J. Watson.