Lyric discussion by Mindsafire 

Okay, I know this is pretty predictable, but for anyone who's really missing the major theme here...

"How can I be sure I'm here? The pills that I've been taking confuse me I need to know that someone sees that There's nothing left, I simply am not here"

"The prescription drugs You'll never find a person inside"

The entire song is fairly straightforward. Really, I think the narrator has legit reasons to be depressed, and sees the medications for what they are - distraction, numbing agents, something to bury the real issues and himself, and consequently, he sees many things in life just like that. He sees society for all its bullshit and emptiness, its want to just turn away and bury things in meaningless sense stimuli to numb pain and distract. And he's clearly missing something fundamental and important to him. Maybe he doesn't even know what that is anymore. Pretty terrible.

Great song.

@Mindsafire And the missing thing is thinking about inside and what is out there, as Wilson said about the album in wikipedia.

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