input: NBC kept Letterman under contract to try him in a different time slot. Late Night with David Letterman debuted February 1, 1982; the first guest on the first show was Bill Murray. Murray later went on to become one of Letterman's most recurrent guests, guesting on the show's 30th anniversary episode, which aired January 31, 2012 and on the very last show, which aired May 20, 2015. The show ran Monday through Thursday at 12:30 a.m. Eastern Time, immediately following The Tonight Show Starring Johnny Carson (a Friday night broadcast was added in June 1987). It was seen as being edgy and unpredictable, and soon developed a cult following (particularly among college students). Letterman's reputation as an acerbic interviewer was borne out in verbal sparring matches with Cher (who even called him an asshole on the show), Shirley MacLaine, Charles Grodin, and Madonna. The show also featured comedy segments and running characters, in a style heavily influenced by the 1950s and 1960s programs of Steve Allen. The show often featured quirky, genre-mocking regular features, including "Stupid Pet Tricks" (which had its origins on Letterman's morning show), Stupid Human Tricks, dropping various objects off the roof of a five-story building, demonstrations of unorthodox clothing (such as suits made of Alka-Seltzer, Velcro and suet), a recurring Top 10 list, the Monkey-Cam (and the Audience Cam), a facetious letter-answering segment, several "Film[s] by My Dog Bob" in which a camera was mounted on Letterman's own dog (often with comic results) and Small Town News, all of which would eventually move with Letterman to CBS. Other memorable moments included Letterman using a bullhorn to interrupt a live interview on The Today Show, announcing that he was the NBC News president and that he was not wearing any pants; walking across the hall to Studio 6B, at the time the news studio for WNBC-TV, and interrupting Al Roker's weather segments during Live at Five; and staging "elevator races", complete with commentary by NBC Sports' Bob Costas. In one infamous appearance, in 1982, Andy Kaufman (who was already wearing a neck brace) appeared with professional wrestler Jerry Lawler, who slapped and knocked the comedian to the ground (though Lawler and Kaufman's friend Bob Zmuda later revealed that the event was staged).

Answer this question "When did Late Night begin?"
output: Late Night with David Letterman debuted February 1, 1982;

input: In 1953, in New York City, he married JoAnn Schumacher (1928-1999), whom he called Joey. JoAnn was his editor and a close adviser, as well as hostess of his "Rothbard Salon". They enjoyed a loving marriage, and Rothbard often called her "the indispensable framework" behind his life and achievements. According to Joey, patronage from the Volker Fund allowed Rothbard to work from home as a freelance theorist and pundit for the first fifteen years of their marriage. The Fund collapsed in 1962, leading Rothbard to seek employment from various New York academic institutions. He was offered a part-time position teaching economics to the engineering students of Brooklyn Polytechnic Institute in 1966, at age 40. This institution had no economics department or economics majors, and Rothbard derided its social science department as "Marxist." However, Justin Raimondo writes that Rothbard liked his role with Brooklyn Polytechnic because working only two days a week gave him freedom to contribute to developments in libertarian politics. Rothbard continued in this role for twenty years, until 1986. Then 60 years old, Rothbard left Brooklyn Polytechnic Institute for the Lee Business School at the University of Nevada, Las Vegas, where he held the title of S.J. Hall Distinguished Professor of Economics, an endowed chair paid for by a libertarian businessman. According to Rothbard's friend, colleague and fellow Misesian economist Hans-Hermann Hoppe, Rothbard led a "fringe existence" in academia, but was able to attract a large number of "students and disciples" through his writings, thereby becoming "the creator and one of the principal agents of the contemporary libertarian movement." Rothbard maintained his position at UNLV from 1986 until his death. Rothbard founded the Center for Libertarian Studies in 1976 and the Journal of Libertarian Studies in 1977. In 1982, he co-founded the Ludwig von Mises Institute in Auburn, Alabama, and was vice president of academic affairs until 1995. The Institute's Review of Austrian Economics, a heterodox economics journal later renamed the Quarterly Journal of Austrian Economics, was also founded by Rothbard in 1987. After Rothbard's death, Joey reflected on Rothbard's happiness and bright spirit. "...he managed to make a living for 40 years without having to get up before noon. This was important to him." She recalled how Rothbard would begin every day with a phone conversation with his colleague Llewellyn Rockwell. "Gales of laughter would shake the house or apartment, as they checked in with each other. Murray thought it was the best possible way to start a day." Rothbard was irreligious and agnostic toward the existence of God, describing himself as a "mixture of an agnostic and a Reform Jew." Despite identifying as an agnostic and an atheist, Rothbard was critical of the "left-libertarian hostility to religion". In Rothbard's later years, many of his friends anticipated that he would convert to Catholicism, but he never did. The New York Times obituary called Rothbard "an economist and social philosopher who fiercely defended individual freedom against government intervention."

Answer this question "Did he retire?"
output:
Rothbard maintained his position at UNLV from 1986 until his death.