What is main line?

Famous quotes containing the words main and/or line:

    The three main medieval points of view regarding universals are designated by historians as realism, conceptualism, and nominalism. Essentially these same three doctrines reappear in twentieth-century surveys of the philosophy of mathematics under the new names logicism, intuitionism, and formalism.
    Willard Van Orman Quine (b. 1908)

    The man of business ... goes on Sunday to the church with the regularity of the village blacksmith, there to renounce and abjure before his God the line of conduct which he intends to pursue with all his might during the following week.
    George Bernard Shaw (1856–1950)