"There ain't no such thing as a free lunch" (alternatively, "There's no such thing as a free lunch" or other variants) is a popular adage communicating the idea that it is impossible to get something for nothing. The initialisms TNSTAAFL, TANSTAAFL, and TINSTAAFL are also used. Uses of the phrase dating back to the 1930s and 1940s have been found, but the phrase's first appearance is unknown. The "free lunch" in the saying refers to the nineteenth century practice in American bars of offering a "free lunch" as a way to entice drinking customers. The phrase and the acronym are central to Robert Heinlein's 1966 science fiction novel The Moon is a Harsh Mistress, which popularized it. The free-market economist Milton Friedman also popularized the phrase by using it as the title of a 1975 book, and it often appears in economics textbooks; Campbell McConnell writes that the idea is "at the core of economics".
Famous quotes containing the words free and/or lunch:
“I have taken the ribbon from around my neck and hidden it somewhere on my person. If you find it, you can have it. You are free to look for it any way you will, and I will think very little of you if you do not find it.”
—Stanley Kubrick (b. 1928)
“Long as there’s lunch counters, you can always find work.”
—Mother and Aunts Of Dorothy Allison, U.S. waitresses. As quoted in Skin, ch. 2, by Dorothy Allison (1994)