Assuming that you have only few days to live and one sf book to read, no hesitation taking this excellent Dan Simmons, you get comfortable in your favorite chair with your best slippers and plaid (in addition it's winter) on knees, you unplug the phones and go for a trip without return into the fascinating world of Hyperion. Your worst enemy is waiting for you, it is called Gritche and he did not want to laugh. Assuming that you only have a few days to live ...