"Well," he continued, "the young Polish Jew, who knew Lessing, and delighted in Schiller's poetry, awakened his sympathy. He gave me the means of studying. The ancient world was now revealed to me in the books to which I had access at college. I saw it in all its cheerful light-heartedness, and also in its thoughtfulness and depth. But that was not the kind of knowledge for which I thirsted. I then made natural science my principal study. My researches were all confined to the realm of matter. At length the need of leading a practically active life grew more and more apparent to me. The fire of youth had begun to smolder; I gave up trying to raise the veil of Isis, and endeavoring to discover the reason of every natural phenomenon. I became a doctor, and I can now say that I made a reputation for skill in my profession. I had changed my name. David Blum would have had many stumbling-blocks and disagreeables in his path that Friedrich Reimann was spared. I did not change my religion with my name--from habit, if you like--for I was indifferent to every form of dogmatic religion. "My practice increased, and I became one of the first physicians in the northern seaport town where I had settled. Then old Prince Sugatscheff was taken ill in Paris, and sent for me. It was his last illness. Before his death, he entreated me to be a faithful friend to his young son, and to accompany him everywhere as his private physician until I thought him capable of taking care of himself, and of withstanding the temptations of the great world. I gave him the promise that destroyed my own career; but he was the only man who had felt a real friendship for me, and he was the only one whom I loved next to my mother. "I discovered the whole responsibility and painfulness of my position very soon after his death. Prince Alexius was a light-minded and depraved, if not absolutely bad man. I did my duty without caring whether it made him dislike me or not; he respected me at least. It was a time of great anxiety and trouble; one thing alone sustained me, and that was the consciousness of having done my duty. Then we went to Baden-Baden, where I made your acquaintance, Frau Graefin...." She had until now listened to him with bent head, but at these words she fixed her eyes upon his face, as though awaiting a sentence of life or death. And he continued, with a slight quiver in his voice: