He uses a very old style of words Hearken, awe, and nor
"He had the eye of a vulture" It grew louder ---louder---louder" "My blood ran cold"
The disease had sharpened my senses --not destroyed --not dulled them. If still you think me mad, you will think so no longer when I describe the wise precautions I took for the concealment of the body.
the theme is if you something bad something bad will happen to you.