The narrator of this work frequently comments on whether the moon is out or not and dislikes the look given him by his neighbor's dog.  
This work's prologue relates how the narrator paid a visit to a friend after hearing he had been afflicted with a dread disease but was relieved to find that it was actually the friend's younger brother, who had since recovered.  The narrator of this work frequently comments on whether the moon is out or not and dislikes the look given him by his neighbor's dog.  When he cannot sleep, he carefully reads a history which has no dates in it and repeatedly sees the phrase "Eat People!" written in between the lines and asks his brother why he had to join with the others who were determined to cannibalize him.  FTP, name this short story by Lu Xun which shares its name with a work of Nikolai Gogol.
This work's prologue relates how the narrator paid a visit to a friend after hearing he had been afflicted with a dread disease but was relieved to find that it was actually the friend's younger brother, who had since recovered.  
Diary of a Madman or A Madman's Diary or Kuangren Riji