4. The Rise of Spiritualism. The Need for the Science of the Spirit
One could say that the conclusion of a particular evolutionary process was reached in the year 1840, that is, in the middle of the nineteenth century. In the period from the fifteenth century to the middle of the nineteenth, humanity was evolving quite distinct faculties that were not present in the same way in an earlier period. One is entirely mistaken if one believes, for instance, that the Copernican world conception or the art of printing could just as well have appeared in human evolution in an earlier century than the one in which they did. The progress of human evolution is just as organic as individual human development. Just as the child of twelve or thirteen lacks the capacity to do things in the world that might be done by a man or woman of thirty five, just as faculties must evolve in the life of an individual in accord with his age, it is also the same with humanity. The special faculties that came to the fore in Copernicus, Galileo and Kepler and later in the scientists of the eighteenth and nineteenth centuries, did not formerly exist. In fact, they correspond to a particular period of human evolution that falls within those centuries. The Greeks or Romans could not have looked at the world similarly because the faculties for doing so were simply not in existence in their time. The individual human would not be perfected if he did not gradually evolve faculties suited to each period of life; neither would humanity become complete in its way if faculties, whose foundations already exist in man's general nature, did not gradually emerge. That these faculties develop, that mankind gradually puts forth what lies within its being is the fundamental fact of human evolution.