Lyric discussion by Outernationalist 

Like others said, I think it's about isolation, and "losing yourself", either to drugs, mental illness, alcohol or just plain old depression. This song is Pink's desperate cry for help... his mind calls him, but he's lost in the wall he has built around himself. He can't get back on his feet, even though a part of him wants to (the 'singer'). It's a wonderful song. If people could learn to overcome the barriers that divide them, this world would be a much better place.

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