Ishihara Color Test

Famous quotes containing the words color and/or test:

    ‘Twas mercy brought me from my Pagan land,
    Taught my benighted soul to understand
    That there’s a God, that there’s a Saviour too:
    Once I redemption neither sought nor knew.
    Some view our sable race with scornful eye,
    “Their color is a diabolic die.”
    Remember, Christians, Negroes, black as Cain,
    May be refin’d, and join th’ angelic train.
    Phillis Wheatley (c. 1753–1784)

    Whenever a true theory appears, it will be its own evidence. Its test is, that it will explain all phenomena.
    Ralph Waldo Emerson (1803–1882)