From Eurogamer: “If there’s one example of video game flavour text that adds much more than flavour, it’s the in-game books of The Elder Scrolls 3: Morrowind. I remember the first time I entered one of the libraries of Vvardenfell (17 years ago!) and was overwhelmed by the ancient tomes; not just the sheer amount of information, but more importantly their evocative strangeness. One work stood out to me even then: The 36 Lessons of Vivec, composed by the hermaphrodite warrior-poet Vivec (aka Vehk), one of Morrowind’s living gods. They seemed like complete gibberish to me back then, and it didn’t help that the Lessons, contained in 36 volumes and dispersed across Vvardenfell, are often encountered out of their proper order.”
Source: N4G PC The brilliant weirdness of Morrowind's in-game books