I think I'd pick The Wounded Sky, by Diane Duane. It's a Trek novel in which (ROT13 to spoiler-warning a decades-old novel): onfvpnyyl gur Ragrecevfr perj uryc

I think I'd pick The Wounded Sky, by Diane Duane. It's a Trek novel in which (ROT13 to spoiler-warning a decades-old novel): onfvpnyyl gur Ragrecevfr perj urycf grfg n arj zrnaf bs cebchyfvba, evcf gur Havirefr, naq va qbvat fb zrrgf n Tbq (abg Fgne Gerx I'f Tbq!) va n arj lrg-gb-or-obea cebgb-Havirefr, juvpu gurl gura uryc sbhaq vg jvgu gurve zbfg cerpvbhf zrzbevrf. Honestly, there's so much to explore in the very concepts that she lays down that it leaves room for an intense amount of imagination and application.