I must frankly admit, however, that, either owing to the derangement of my nerves, or my new impressions in my new lodgings, or my recent melancholy, I gradually began at dusk to sink into that condition which is so common with me now at night in my illness, and which I call mysterious horror. It is a most oppressive, agonizing state of terror of something which I don’t know how to define, and something passing all understanding and outside the natural order of things, which yet may take shape this very minute, as though in mockery of all the conclusions of reason, come to me and stand before me as an undeniable fact, hideous, horrible, and relentless. This fear usually becomes more and more acute, in spite of all the protests of reason, so much so that although the mind sometimes is of exceptional clarity at such moments, it loses all power of resistance. It is unheeded, it becomes useless, and this inward division intensifies the agony of suspense. It seems to me something like the ...
