It's like I realized that way down inside,
I've always been lonely for something.
But I don't know what for.
It's like everybody in the world wants something.

Only they never know exactly what it is -- they just keep finding out what it's not. 
You know how,

when you turn off the TV or you come out of some concert,
and everything just feels empty?
Like you thought that would be what you wanted,
and then it wasn't?