Nutshell: liar writes shruggable intergalactic/transtemporal there-and-back-again.
Beyond proficient at the sentence level, with many slick turns of phrase and cool observations. At the level of discourse, though, it's kinda hard to see the point. Might benefit from a reading of
The Book of the New Sun immediately prior, though.
Love how Severian at one point addresses the reader: "I will leave it to you to explain these things" (167). Okay then!
Seems that this new sun business destroyed the world. Am I yawning?