Actual Error Covariance

Famous quotes containing the words actual and/or error:

    I have not read of any Arcadian life which surpasses the actual luxury and serenity of these New England dwellings. For the outward gilding, at least, the age is golden enough.
    Henry David Thoreau (1817–1862)

    It is error alone which needs the support of government. Truth can stand by itself.
    Thomas Jefferson (1743–1826)