Ishihara Color Test

Famous quotes containing the words color and/or test:

    But whenever the roof came white
    The head in the dark below
    Was a shade less the color of night,
    A shade more the color of snow.
    Robert Frost (1874–1963)

    There is held to be no surer test of civilisation than the increase per head of the consumption of alcohol and tobacco. Yet alcohol and tobacco are recognisable poisons, so that their consumption has only to be carried far enough to destroy civilisation altogether.
    Havelock Ellis (1859–1939)