Spherical Principal Series

Famous quotes containing the words principal and/or series:

    The principal office of history I take to be this: to prevent virtuous actions from being forgotten, and that evil words and deeds should fear an infamous reputation with posterity.
    Tacitus (c. 55–c. 120)

    Galileo, with an operaglass, discovered a more splendid series of celestial phenomena than anyone since.
    Ralph Waldo Emerson (1803–1882)