An Excerpt from "The Statement of Randolph Carter" By H.P. Lovecraft-

I repeat to you, gentlemen, that your inquisition is fruitless. Detain me here forever if you will; confine or execute me if you must have a victim to propitiate the illusion you call justice; but I can say no more than I have said already. Everything that I can remember, I have told with perfect candour. Nothing has been distorted or concealed, and if anything remains vague, it is only because of the dark cloud which has come over my mind—that cloud and the nebulous nature of the horrors which brought it upon me.
Again I say, I do not know what has become of Harley Warren; though I think—almost hope—that he is in peaceful oblivion, if there be anywhere so blessed a thing. It is true that I have for five years been his closest friend, and a partial sharer of his terrible researches into the unknown. I will not deny, though my memory is uncertain and indistinct, that this witness of yours may have seen us together as he says, on the Gainesville pike, walking toward Big Cypress Swamp, at half past eleven on that awful night. That we bore electric lanterns, spades, and a curious coil of wire with attached instruments, I will even affirm; for these things all played a part in the single hideous scene which remains burned into my shaken recollection. But of what followed, and of the reason I was found alone and dazed on the edge of the swamp next morning, I must insist that I know nothing save what I have told you over and over again. You say to me that there is nothing in the swamp or near it which could form the setting of that frightful episode. I reply that I know nothing beyond what I saw. Vision or nightmare it may have been—vision or nightmare I fervently hope it was—yet it is all that my mind retains of what took place in those shocking hours after we left the sight of men. And why Harley Warren did not return, he or his shade—or some nameless thing I cannot describe—alone can tell.