Lyric discussion by CillianVa 

I'll start by giving Linkin Park my appreciation. Without bands like this creating introspective, influential, and unique music, our world would be filled with more Bieber's and Jepsens'.

Many people will attach this song to the Medal of Honor influenced video, but the song was definitely not written with that in mind. I don't think it is about a soldier in the literal sense (but in a metaphorical sense, we are all soldiers).

The lyrics tell me of someone who has been negatively influenced by something external, and something within them has been deeply affected by it. A crack in a castle of glass is a structural weakness, although small, it is a weakness that could threaten the entire structure.

To me, the opening lines set the terms fairly well, "Wash the poison from off my skin, show me how to be whole again." He wishes to be rejuvenated, cleansed from what has tainted him, and to be full once more.

The second verse is a bit harder for me to interpret, but seems to be regard the person that caused this taint or crack. (this person could also be the singer referring to themself, depending on your interpretation). Someone offered wonder, security, and/or salvation "fly me up on your silver wing, past the black where the sirens sing"

"Warm me up in the nova's glow" refers to this false hope, a nova is an incredibly destructive force. "Drop me down to the dream below" - the dream, the illusion, is false, but he asks to be dropped into it, but why?

"Cause I'm only a crack in this castle of glass, hardly anything there for you to see." - Because he is insignificant, small, a tiny crack in an entire castle of glass. A small blemish on a beautiful structure.

The feelings expressed are ones of being insignificant and small, but there's a strange power to it too, perhaps the fact that the castle is made of glass is what proves this. A crack can start small, but with a little pressure it will quickly grow into a much larger one. Perhaps this is the transcendant part of the song, the fact that while this person feels so small and useless, they are in fact a key part to the integrity of the 'castle of glass', which could be a metaphor for a relationship, for society, for life, addiction, you name it.

Linkin Park is a fantastic band, anyone who hates on their music hasn't listened enough. The layering is fantastic. Robot Boy, this song and Burning in the Skies are some of the most powerful songs I've ever had the joy of hearing. Don't close your mind, let the music free your soul.

I made an account just to tell you that you are awesome.

He did not ask to be dropped into the dream below - he was just saying that upon finding out the truth that nova's glow is nothing but a false hope, he went back to square 1 which was when he started to pursue this false dream

My thoughts exactly :)

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