What are carriers?

Famous quotes containing the word carriers:

    “Nature, doubtless, has some compelling cause
    To glut the carriers of her epidemics—
    Nor did the peach complain.”
    —Robert Graves (1895–1985)

    “Now, the wry Rosenbloom is dead
    And his finical carriers tread,
    On a hundred legs, the tread
    Of the dead.
    Rosenbloom is dead.”
    —Wallace Stevens (1879–1955)