Actual Error Covariance

Famous quotes containing the words actual and/or error:

    In the actual world—the painful kingdom of time and place—dwell care, and canker, and fear. With thought, with the ideal, is immortal hilarity, the rose of joy.
    Ralph Waldo Emerson (1803–1882)

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