Lyric discussion by Mrpop2213 

A Crack in a Castle of Glass To me this means something easily missed but very important. It also says, Wash the poison from my skin, show me how to be whole again. This could be saying that he had done something wrong and got in trouble but he was only a small part of the big "Wrong doing"

So basically it's saying that someone is a small part of a big picture, but is still very important. Hope I didn't ramble too much, Great song Thanks Linkin Park

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