StoryDragon quoted The Beautiful Decay by Veo Corva
Content warning The Beautiful Decay, quote; spoilers (chapter 46)
Ree cleared her throat. 'The Lich is dead. But we have his grimoire.' Kylath and Igneus stared at her in shock. Arthura paused in her bare-footed pacing to consider her daughter, her expression unreadable. 'You have it?' Igneus said. 'Well, let's see it!' Ree shifted uncomfortably in her seat. She glanced at Smythe, who made no move to hand over the tome. 'No,' she said. 'The Lich meddled with things that have put the entity crypt at risk. We don't want that knowledge to spread further than it has to.'
— The Beautiful Decay by Veo Corva (Page 327)
Good. The knowledge should be kept hidden whenever possible indeed.