Continuity mistake: Sati and her family leave one suitcase when they get on the train (the one Neo was carrying), but when the train comes back and Trinity steps out, there is no suitcase. It can't have gone anywhere - as we see when Neo tries, the only way out is on the train, otherwise you're caught in a loop. (00:14:05 - 00:24:00)
The Matrix Revolutions (2003)
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Directed by: Lana Wachowski, Lilly Wachowski
Starring: Keanu Reeves, Laurence Fishburne, Jada Pinkett Smith, Hugo Weaving, Carrie-Anne Moss, Ian Bliss
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Agent Smith: Why, Mr. Anderson? Why do you do it? Why get up? Why keep fighting? Do you believe you're fighting for something? For more than just your survival? Can you tell me what it is? Do you even know? Is it freedom? Or truth? Perhaps peace? Could it be for love? Illusions, Mr. Anderson. Vagaries of perception. The temporary constructs of a feeble human intellect trying desparately to justify an existence that is without meaning or porpose. And all of them as artificial as the Matrix itself, although only a human mind could invent something as insipid as love. You must be able to see it, Mr. Anderson. You must know it by now. You can't win. It's pointless to keep fighting. Why, Mr. Anderson? Why?! Why do you persist?!
Neo: Because I choose to.
Trivia: In Greek mythology Persephone was the wife of Hades, ruler of Hell. Persephone is the wife of the Merovingian, ruler of the Hell Club.
More questions & answers from The Matrix Revolutions
Answer: In the first film she points this same sign out to Neo and explains that it means "Know Thyself"