ISBN Check Digit

Famous quotes containing the words check and/or digit:

    When you go out, check the look of the sky; when you come in, check the looks on people’s faces.
    Chinese proverb.

    Bless my soul, Sir, will you Britons not credit that an American can be a gentleman, & have read the Waverly Novels, tho every digit may have been in the tar-bucket?
    Herman Melville (1819–1891)