Quote Originally Posted by Fan View Post
Grey Knights do that, in the Novel "Hammer of Daemon's" the Inqusitior goes mad from speaking the name once, whereas the Grey Knight in Quest, Knight Captain Alaric is able to speak it, but he feels a black bile boil in his throat, and his words burn as he speaks it.

That is not how they portray the speaking of a true name in the novella at all.
Inconsistency in 40K stories? Le gasp.