Such a beautiful melody. And while I don't listen to lyrics looking for profundity (spares me being disappointed 99.999% of the time), "after all, it's not easy banging your heart against some mad bugger's wall" has always stuck with me.
This is one of those albums that actually finishes at the very end of it: the moment when I realized about the cyclic nature of it ("Isn't this where...?") was actually terrifying... I still feel very strange and somewhat shocked everytime I listen to it. I don't think there's a more involving ending than this.