Man Who Found Out (A Nightmare)
Author: first_name: Algernon
last_name: Blackwood
Language: English
Year: 1921

A researcher goes on an expedition to find "The Tablets of the Gods" which have plagued his dreams since his boyhood. He finds them, and the horrible truth of humanity's true purpose in the universe. This story, The Man Who Found Out" is an example to me of pure cosmic horror in that the horror comes totally from knowledge which is (in-story) so terrible that it forever blights the minds of anyone who discovers it. Two highly intelligent and well informed men, Professor Ebor and then Dr. Laidlaw