I'm really a newbie when it comes to Joy Division because I only have "Closer." I bought the album a few months ago and whew! My first spin was not an easy listen by any means. It was like listening to "White Album" for the first time. An industrial "White Album." After a couple of listens now I love it, though I'd leave others to discuss the lyrics because they are just too much for me.
Also, without Joy Division, there'd be no Nine Inch Nails.
isolation (gotta love the synth)
a means to an end
heart and soul - ONE WILL BURN