Melville Louis Kossuth (Melvil) Dewey (December 10, 1851 – December 26, 1931) was an American librarian and educator, inventor of the Dewey Decimal system of library classification, and a founder of the Lake Placid Club.

Dewey was born in Adams Center, New York, the fifth and last child of Joel and Eliza Greene Dewey. He attended rural schools and determined early that his destiny was to be a reformer in educating the masses. At Amherst College he belonged to Delta Kappa Epsilon, earning a bachelor's degree in 1874 and a master's in 1877.

While still a student, he founded the Library Bureau which sold high quality index cards and filing cabinets, and established the standard dimensions for catalog cards.

From 1883 to 1888 he was chief librarian at Columbia University, from 1888 to 1906 director of the New York State Library, and from 1888 to 1900 secretary and executive officer of the University of the State of New York. In 1895 Dewey founded the Lake Placid Club with his wife Annie. He and his son Godfrey had been active in arranging the Winter Olympics which took place at Lake Placid—he was chairman of the New York State Winter Olympics Committee. In 1926 he went to Florida to establish a new branch of the Lake Placid Club. He died in Lake Placid, Florida.

"The Man" is a slang phrase that may refer to the government or to some other authority in a position of power. In addition to this derogatory connotation, it may also serve as a term of respect and praise.

The phrase "the Man is keeping me down" is commonly used to describe oppression. The phrase "stick it to the Man" encourages resistance to authority, and essentially means "fight back" or "resist", either openly or via sabotage.

The earliest recorded use^{[citation needed]} of the term "the Man" in the American sense dates back to a letter written by a young Alexander Hamilton in September 1772, when he was 15. In a letter to his father James Hamilton, published in the Royal Dutch-American Gazette, he described the response of the Dutch governor of St. Croix to a hurricane that raked that island on August 31, 1772. "Our General has issued several very salutary and humane regulations and both in his publick and private measures, has shewn himself the Man." ^{[dubious – discuss]} In the Southern U.S. states, the phrase came to be applied to any man or any group in a position of authority, or to authority in the abstract. From about the 1950s the phrase was also an underworld code word for police, the warden of a prison or other law enforcement or penal authorities.