In view of these considerations, it is hard to understand how the large majority of the so-called educated classes can persevere, on the one hand, in declaring belief in a personal God to be an indispensable principle of religion, and, on the other hand, in at the same time rejecting the belief in a personal devil as an exploded superstition of the Middle Ages. This inconsistency on the part of educated Christians is all the more incomprehensible and censurable, inasmuch as both dogmas in equal degree form an integral part of the Christian creed. The personal devil, as "Satan," "the Tempter," "the Destroyer," and so forth, undeniably plays a most important part in the New Testament, though not met with in the earlier portions of the Old. Our great reformer, Martin Luther himself, who "sent to the devil" so many antiquated dogmas, was unable to rid himself of the conviction of the real existence and personal enmity of Beelzebub; we have only to think of the historical ink-spot at Wartburg! Moreover, our Christian art, in many thousands of paintings and other representations, has exhibited Satan in corporeal form just as realistically as it has the three "Divine Persons," about whose "hypostatical union" human reason has for eighteen hundred years been tormenting itself in vain. The deep impression made by such concrete representations, a million times repeated, especially on childish understandings, is usually under-estimated as to its tremendous influence; to it certainly is in large measure to be attributed the fact that irrational myths of such a kind, under the mask of "doctrines of faith," continue to hold their ground in spite of all protests of reason. Liberal-minded Christian theologians have, it is true, often sought to eliminate the personal devil from Christian teaching, representing him as merely the personification of falsehood, the spirit of evil. But with equal right we must in that case substitute for a personal God the personified idea of truth, the Spirit of Goodness. To such a representation no objection can be made; rather do we recognise in it a bridge connecting the dim wonderland of religious poesy with the luminous realms of clear scientific knowledge.