Central Extension

Central extension may refer to:

  • Central Extension (Long Island Rail Road), a rail line
  • Central extension (mathematics), a type of group extension

Famous quotes containing the words central and/or extension:

    “The best laws cannot make a constitution work in spite of morals; morals can turn the worst laws to advantage. That is a commonplace truth, but one to which my studies are always bringing me back. It is the central point in my conception. I see it at the end of all my reflections.”
    —Alexis de Tocqueville (1805–1859)

    “The motive of science was the extension of man, on all sides, into Nature, till his hands should touch the stars, his eyes see through the earth, his ears understand the language of beast and bird, and the sense of the wind; and, through his sympathy, heaven and earth should talk with him. But that is not our science.”
    —Ralph Waldo Emerson (1803–1882)