<p>I think you are confused with <a rel="nofollow" href="https://tibia.fandom.com/wiki/Librarian">Librarian</a> (Creature) and <a rel="nofollow" href="https://tibia.fandom.com/wiki/Cerebrir">Cerebrir</a> (NPC). Both have the same sprite (<img alt="" src="https://static.wikia.nocookie.net/tibia/images/0/08/Cerebrir.gif/revision/latest?cb=20180627004427&path-prefix=en&format=original" style="height:171px; width:300px">), sprite, the <a rel="nofollow" href="https://tibia.fandom.com/wiki/Librarian">Librarian</a> (Creature) don't have any useful thing, the <a rel="nofollow" href="https://tibia.fandom.com/wiki/Cerebrir">Cerebrir</a> (NPC) can give you some information in the last battle of <a rel="nofollow" href="https://tibia.fandom.com/wiki/The_Secret_Library_Quest">The Secret Library Quest</a>.</p>