“When wild in woods the noble savage ran.” Yet among all the plans of reform there is one which is correct, answering the wants of the time; and among all the world-conceptions which struggle to exist there is also one which is the legitimate outcome of the present world-conception. It is the present world-conception enlarged through additional experience and purified of certain errors. And it is an often repeated occurrence in history that the old and the new, father and son, have to fight with each other. The heir apparent either does not know that he is the child of his antagonist, or the latter the defendant of the present state does not know that he fights with his own son. This often repeated fact has found a mythological expression in the old Teutonic song of Hildebrand meeting in combat his son Hadubrand, a legend which in similar versions appears again in other Aryan sagas, the best known of which is the tale of Rustem’s struggle with Sohrab in Firdus’s great Iranian epic. Can the struggle between the old and the new world-conception be avoided? No, it cannot and should not, for the new has to prove its legitimacy by showing its intrinsic strength; it must show that it has the power to exist. The struggle cannot be avoided, but the bitterness, the severity, the barbarity of the struggle can be avoided. Let Hildebrand and Hadubrand measure swords in a spiritual encounter, let the vanquished ideas yield to the stronger ideas, and they will prepare the gradual change of an evolution instead of the sudden rupture of a revolution. Freedom of thought is always the best soil for a peaceful evolution but any system that binds the consciences of men and ties their ideas down to the average level of a certain age will be as dangerous as a boiler without a valve. There are periods of instability in history when the strengthening of the conservative spirit by imposing fetters upon the consciences of men appears useful and almost a condition for the development of some kind of a civilisation. This found expression in the historic legends of Lycurgus and Solon, binding their countrymen by oath not to alter the laws of the state. But these periods are after all ephemeral, and we ought to know by this time that we cannot bid the sun stand still or check the spirit of progress and the growth of mankind. There are nations which develop slowly because they rush into innovations, but there are other nations which have gone to the wall because of over-conservatism through which they were induced to suppress the freedom of thought and to deny the right of doubting the absolute validity of the prevailing world-conception.