Voices from the past, in the service of voice. More advice on good writing from great writers:
Mark Twain: "As to the adjective, when in doubt, strike it out."
(Especially true when the adjective carries a judgment that should be left to the reader.)
Stephen King: "And what greater enemy of simplicity and straightforwardness than the adverb?"
(Remember? An adverb is a crutch for the wrong verb.)
Elmore Leonard: "I try to leave out the parts that people skip."
Gene Fowler: "Writing is easy. All you do is sit staring at a blank sheet of paper until drops of blood form on your forehead."
(Those drops can empower a voice that lets a reader know they come from a feeling writer.)