Lyric discussion by beautifulelegy 

Sounds like psychosis, regardless of the fact that I bring up severe mental illnesses whenever I can. =P Delusions and hallucinations are what constitute the symptoms of psychosis. In this case, the delusions would be of paranoia, not grandeur.

"Alice pressed against the wall So she can see the door In case the laughing strangers crawl and Crush the petals on the floor"

The character, Alice, is watching the entranceway, petrified; she's scared of the /unfamiliar/ things she sees. I've always thought of flowers as symbols of beauty. The crushed petals represent the fallacy that's breaking, the fallacy broken by "the laughing strangers."

Going with this interpretation, the second stanza is rather self-explanatory.

"Pass the crystal spread the Tarot In illusion comfort lies"

The crystal, or crystal ball, and the Tarot, represent the need to know her future, or in her eyes, her impending destruction.

"The safest way the straight and narrow No confusion no surprise"

She's so confused about what's going to happen. How will they get me? What more will come? If she believes in one thing and one thing only, she won't be surprised. So, she's either subconsciously or consciously decided to believe in her death.

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