No such conclusions are forced upon the one who studies the spectrum phenomenon with the eyes of Goethe. Like the modern experimenter, he, too, is faced with the question 'Discovery or Manufacture?' and he, too, finds the answer to be 'Manufacture'. But to him nature can disclose herself as the real manufacturer, showing him how she goes to work in bringing about the colours, because in following Goethe he is careful to arrange his observations in such a way that they do not veil nature's deeds.