It is this magnificent consistency, this confident dogmatism, which gives us the secret of the enormous influence of Treitschke on his countrymen, as it explains the hypnotism of Jean-Jacques Rousseau on a previous generation. I do not think it would be easy to overestimate the extent of that influence. It is true that in one sense Treitschke’s political philosophy only expresses the Prussian policy, and that he did not create it. But when a political ideal is expounded with such clarity and such force, when it is propagated with such enthusiasm, when it takes such exclusive hold of the mind, it becomes a hundred times more efficient and more dangerous; it acquires the compelling force and inspires the fanaticism of religion. Those readers who will follow Treitschke’s close reasoning to the end will probably agree with me that the political creed of which he has been the apostle and prophet is substantially the same creed which has plunged Europe into the present world war, and that, more than any one thinker, much more certainly than Nietzsche, Treitschke must be held responsible for the catastrophe. I have confined myself to expounding the doctrines of Treitschke. I have not attempted to refute them. It is not my object to denounce: there is always a sufficient number of publicists ever ready to undertake the task of denunciation. I am only trying to understand. Nor have I dwelt on any side-issues. I have restricted myself to those simple and fundamental axioms which have directed the policy of Prussia. Almost invariably in human history it is only the simple, sweeping dogmas which obtain universal acceptance. I.—TREITSCHKE AS THE REPRESENTATIVE PRUSSIAN. There exist in the realm of fiction certain literary types which are an equal joy to the creative artist and to the student of human nature. There are certain malignant diseases which are an inspiration to the pathologist. And there are criminal cases which are a revelation to the lawyer: test cases which lead up to new discoveries and illustrate fundamental principles. What those classical types of Balzac or Dostoievski are to the critic, what those diseases and criminal cases are to the surgeon and the lawyer, the writings of Treitschke are to the student of history and politics; they throw a new and vivid light on the dark and hidden depths of the Prussian mind. They reveal like no other German writings the meaning of German policy, the spirit which inspires it. They explain what without them would have remained unexplained. He is much more than the historian of the Prussian State, he is the champion of its ideals. Much better than Bismarck, or the Kaiser, or than the “Clown Prince,” he makes clear to us the aims and the aspirations of the Hohenzollern monarchy and of the German nation.