Quadratic Difference Tones

Famous quotes containing the words difference and/or tones:

    “The problem of induction is not a problem of demonstration but a problem of defining the difference between valid and invalid
    predictions.”
    —Nelson Goodman (1906)

    “‘Tis not that thy mien is stately,
    ‘Tis not that thy tones are soft;”
    —Charles Stuart Calverley (1831–1884)