Key

Key may refer to:

  • Key (lock), device used to open a lock or door
    • Skeleton key or master key, a key altered to bypass wards placed inside a lock
  • Key (chart), a guide to colours and symbols used in a data chart, graph, plot or diagram
  • Key (cryptography), a piece of information that controls the operation of a cryptography algorithm
  • Key (engineering), a type of coupling used to transmit rotation between a shaft and an attached item
  • Key (map), a guide to a map's symbology

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Famous quotes containing the word key:

    There are two kinds of timidity—timidity of mind, and timidity of the nerves; physical timidity, and moral timidity. Each is independent of the other. The body may be frightened and quake while the mind remains calm and bold, and vice versë. This is the key to many eccentricities of conduct. When both kinds meet in the same man he will be good for nothing all his life.
    Honoré De Balzac (1799–1850)

    Woe unto you, lawyers! for ye have taken away the key of knowledge: ye entered not in yourselves, and them that were entering in ye hindered.
    Bible: New Testament Jesus, in Luke 11:52.

    The hypothesis I wish to advance is that ... the language of morality is in ... grave disorder.... What we possess, if this is true, are the fragments of a conceptual scheme, parts of which now lack those contexts from which their significance derived. We possess indeed simulacra of morality, we continue to use many of the key expressions. But we have—very largely if not entirely—lost our comprehension, both theoretical and practical, of morality.
    Alasdair Chalmers MacIntyre (b. 1929)