While the Nine Gates book is fictional, the movie is based on a very real (and excellent) novel by Arturo Pérez-Reverte titled "The Club Dumas." In the novel, the protagonist Lucas Corso is tracking two different books: one is a lost chapter of The Three Musketeers , and the other is the De Umbrarum Regni Novem Portis . Can You Download "The Nine Gates" PDF?
“Qui se ipsum non videt, Diabolum videt” (He who does not see himself, sees the Devil). Engraving: A hooded figure holding a lantern before a corridor of mirrors. Each mirror reflects a different version of the figure, but one reflection shows a horned shadow. Interpretation: The gate tests self-knowledge. To pass, one must recognize the darkness within before seeking it without. The Nine Gates Of The Kingdom Of Shadows Pdf --LINK