Actual Error Covariance

Famous quotes containing the words actual and/or error:

    “Description is revelation. It is not
    The thing described, nor false facsimile.
    It is an artificial thing that exists,
    In its own seeming, plainly visible,
    Yet not too closely the double of our lives,
    Intenser than any actual life could be....”
    —Wallace Stevens (1879–1955)

    “It is an error to believe that the Roman Pontiff can and ought to reconcile himself to, and agree with, progress, liberalism, and contemporary civilization.”
    —Pope Pius IX (1792–1878)