Ishihara Color Test

Famous quotes containing the words color and/or test:

    Since the quarrel
    Will bear no color for the thing he is,
    Fashion it thus: that what he is, augmented,
    Would run to these and these extremities.
    William Shakespeare (1564–1616)

    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)