A week had elapsed since my arrival in Bellevue. I had been introduced to Doctor Castleton, and had exchanged a few words with him. I had also listened to several of his street-corner talks, and my interest in him from day to day had increased. This interest must have been reciprocal, for he seemed to look for my coming; but then, in whom was he not interested? I liked him for his real goodness, was entertained by his erratic ways, and admired his intellectual brightness. Never before had I come in contact with a mind at once so spontaneous and so versatile. It was perhaps his most striking peculiarity, that he seemed always to be looking for something startling to occur; and in a dearth of the new and sensational from without, he produced excitement for the community from within. The weather, for instance, was growing warmer, and the summer was apparently to be a sultry one: hence, before the season was ended we were to look for the most sweeping epidemics of disease; a comet had been sighted by one of our comet-hunters, and we were all to say later whether or not it would have been better if we'd never been born, and so on, and so on. His mind teemed with a prescience of the plans and plots of statesmen, of bureaucrats, and of "plutocrats": Germany was going to overshadow Europe, and "grind all beneath it like a glacier"; "France was about to strike back at Prussia, and the blow would be felt in the trembling of the earth from Pole to Pole." Yet this, I thought, was to the man himself all fiction--the froth on the limpid and sparkling depths beneath--the overflow of a bright, undisciplined mind amid the stagnation of a country town. This strange man would not intentionally have brought actual injury upon even an enemy--if he ever had a real enemy; he was at heart, and generally in practice, as kind as a gentle woman. But he seemed unable to exist without mental super-activity; and the sympathy of his fellows in his mental gyrations was to him a constant necessity. Few of the persons whom he habitually met and who had leisure were able to discuss with him the books he read, and not many of them cared even to hear him talk of his fresh literary accessions. He had, long ago, and many times, described for the benefit of the habitués of the corners, the career of Alexander and of Napoleon, explaining what they had done, and how they had done it, and _why_; with instances in which the execution of their plans had met with failure, the reasons for that failure, and the methods by which, if _he_ had been them, success might easily have been attained. An ancient-looking apothecary, with an old "Rebel bushwhacker" and a painter out of work who "loafed" of evenings in, or in front of, the corner apothecary shop, had stood gap-mouthed at these recitations until the mine of wonders had been to the last grain exhausted. Still, excitement must be procured for them. The doctor could better have