Four Weird Tales by Algernon Blackwood

The estate of the dead man was small and uncomplicated, and Dr. Laidlaw, as sole executor and residuary legatee, had no difficulty in settling it up. A month after the funeral he was sitting alone in his upstairs library, the last sad duties completed, and his mind full of poignant memories and regrets for the loss of a friend he had revered and loved, and to whom his debt was so incalculably great. The last two years, indeed, had been for him terrible. To watch the swift decay of the greatest combination of heart and brain he had ever known, and to realize he was powerless to help, was a source of profound grief to him that would remain to the end of his days.

At the same time an insatiable curiosity possessed him. The study of dementia was, of course, outside his special province as a specialist, but he knew enough of it to understand how small a matter might be the actual cause of how great an illusion, and he had been devoured from the very beginning by a ceaseless and increasing anxiety to know what the professor had found in the sands of "Chaldea," what these precious Tablets of the Gods might be, and particularly--for this was the real cause that had sapped the man's sanity and hope--what the inscription was that he had believed to have deciphered thereon.