At the close of this winter, that is in 1803, Kant first began to complain of unpleasant dreams, sometimes of very terrific ones, which awakened him in great agitation. Oftentimes melodies, which he had heard in earliest youth sung in the streets of Königsberg, resounded painfully in his ears, and dwelt upon them in a way from which no efforts of abstraction could release him. These kept him awake to unseasonable hours; and often when, after long watching, he had fallen asleep, however deep his sleep might be, it was suddenly broken up by terrific dreams, which alarmed him beyond description. Almost every night, the bell-rope, which communicated with a bell in the room above his own, where his servant slept, was pulled violently, and with the utmost agitation. No matter how fast the servant might hurry down, he was almost always too late, and was pretty sure to find his master out of bed, and often making his way in terror to some other part of the house. The weakness of his feet exposed him to such dreadful falls on these occasions, that at length (but with much difficulty) I persuaded him to let his servant sleep in the same room with himself. The morbid affection of the stomach began now to be more and more distressing; and he tried various applications, which he had formerly been loud in condemning, such as a few drops of rum upon a piece of sugar, naphtha, [Footnote: For Kant's particular complaint, as described by other biographers, a quarter of a grain of opium, every twelve hours, would have been the best remedy, perhaps a perfect remedy.] &c. But all these were only palliatives; for his advanced age precluded the hope of a radical cure. His dreadful dreams became continually more appalling: single scenes, or passages in these dreams, were sufficient to compose the whole course of mighty tragedies, the impression from which was so profound as to stretch far into his waking hours. Amongst other phantasmata more shocking and indescribable, his dreams constantly represented to him the forms of murderers advancing to his bedside; and so agitated was he by the awful trains of phantoms that swept past him nightly, that in the first confusion of awaking he generally mistook his servant, who was hastening to his assistance, for a murderer. In the day-time we often conversed upon these shadowy illusions; and Kant, with his usual spirit of stoical contempt for nervous weakness of every sort, laughed at them; and, to fortify his own resolution to contend against them, he wrote down in his memorandum-book, 'There must be no yielding to panics of darkness.' At my suggestion, however, he now burned a light in his chamber, so placed as that the rays might be shaded from his face. At first he was very averse to this, though gradually he became reconciled to it. But that he could bear it at all, was to me an expression of the great revolution accomplished by the terrific agency of his dreams. Heretofore, darkness and utter silence were the two