What is vicious cycle?

Famous quotes containing the words vicious and/or cycle:

    ‘Tis weak and vicious people who cast the blame on Fate. The right use of Fate is to bring up our conduct to the loftiness of nature.
    Ralph Waldo Emerson (1803–1882)

    Only mediocrities progress. An artist revolves in a cycle of masterpieces, the first of which is no less perfect than the last.
    Oscar Wilde (1854–1900)