EXCERPT Doom is always a matter of unfinished business. And this book, an attempted philosophy of doom, also addresses a kind of unfinished business: a second volume to settle affairs and leave things done; a last decisive stab at formulating the once-and-for-all. And yet concluding a line of thought is no easy task: it requires both the overpayment of debts (to bad gods) and the overkilling of consciousness (through bad turns of language, image, and possibility). The writing on the wall; the blood on the wall.…