Corpus boundary — Napoleon Hill v1

Included

• The Law of Success in Sixteen Lessons (1928, Ralston University Press) —
  PROOF WORK, the entire corpus. Introductory Lesson + the sixteen lessons
  (Definite Chief Aim, Self-Confidence, Habit of Saving, Initiative and
  Leadership, Imagination, Enthusiasm, Self-Control, Habit of Doing More Than Paid
  For, Pleasing Personality, Accurate Thought, Concentration, Cooperation, Failure,
  Tolerance, The Golden Rule, plus the Master Mind that runs through all of them).
  Single normalized evidence file: sources/law_of_success_1928.txt.
• PD basis: US term expiration (1928 work → PD since 1 Jan 2024; 95-year term, US Copyright Office Circular 15A).
  See sources/SOURCE_MANIFEST.md. Every evidence blockquote is verbatim English
  from this one file; RU in notes is «перевод наш».

Excluded

• Think and Grow Rich (1937) — DELIBERATELY out of corpus. Its PD status rests
  only on a contested non-renewal claim; life+70 protects it abroad until 2041; the
  title is trademarked by the Napoleon Hill Foundation. Its signature phrasing
  ("burning desire" in TGR's chapter sense, "sex transmutation", the thirteen
  "steps to riches", "the secret", the Andrew Carnegie "formula" wording of 1937)
  must NOT be quoted or attributed here. Where a concept genuinely also lives in
  the 1928 text (e.g. definite chief aim, auto-suggestion, the Master Mind, "burning
  desire" as it appears in Lesson 2), we cite the 1928 occurrence only.
• Hill's later works: The Master-Key to Riches, How to Sell Your Way Through
  Life, Grow Rich with Peace of Mind, You Can Work Your Own Miracles,
  Outwitting the Devil, PMA / Success Through a Positive Mental Attitude — all
  post-1928, none PD in this build.
• Modern edited/"revised"/"annotated" editions of Law of Success (re-copyrighted
  by their editorial changes) — only the 1928 first-edition text is the source.
• Internet "Napoleon Hill quote" collections and motivational compilations with no
  edition trace — the densest field of mutated Hill quotes (see
  QUOTE_AUTHENTICITY.md).

Included separately, marked

• Author self-characterizations and the General Introduction (section: intro).
• Quoted third parties inside the 1928 text (Carnegie, Ford, Emerson, scripture,
  the "You never can tell what a thought will do" verse) are marked as quoted
  material within the corpus, not Hill's own aphorism, at each use site.

Reason

One work, one clean PD basis, one evidence pool. Hill's reception is even more
meme-distorted than Nietzsche's (the whole 20th-century self-help quote economy
runs on him), and Think and Grow Rich is exactly the work most likely to drag in
non-PD text and misquotes — so it stays out and Law of Success (1928) is the
stable primary source.