Castle Of Glass is about the frustration that comes with being a human, almost anyone can resonate with these lyrics on some level, it really should have been the last song on A Thousand Suns. It's about someone who's ego feels unimportant to the universe around them, their ego is hurt by that, the ego wants to feel bigger, so they want to go back to discover the true essence of their being, lose that ego and become awareness, before going back to the life they knew, having a more positive effect on everything around them. Take me down to the river bend (I want to alter my perception of reality for a moment) Take me down to the fighting end (I want to remind myself of the inevitable end to my life) Wash the poison from off my skin (Stop me from living in a negative way) Show me how to be whole again (I want to go back to how I was, before society and media told me what was right and wrong) Fly me up on a silver wing (Take me deeper than that, let me become aware of the consciousness of the universe) Past the black where the sirens sing (Let me ignore the thoughts that beg for my attention) Warm me up in a nova's glow (Let this consciousness give me strength) And drop me down to the dream below (I want to take this back to the world I know) 'Cause I'm only a crack (I'm an unimportant blemish) in this castle of glass (to the universe) Hardly anything there for you to see (Now I know, who I am on the surface is only a fraction of what I truly am) For you to see (For you to realise you are too) Bring me home in a blinding dream (Let me die now and wake up as an awakened being) Through the secrets that I have seen Wash the sorrow from off my skin (Let me not dwell on my mistakes from before) And show me how to be whole again Hope you enjoyed, if this has helped you any way.. I suggest listening to Robot Boy again too.