Lazarus's Grimoire

 is a tome in Act I of Diablo III. A page of it is needed to complete the achievement A Quick Study and can be found in The Cursed Hold, in the room with the guillotine just before the exit. The journal will drop from Lazarus's Ghost just after watching the spectral re-enactment of Queen Asylla's execution.

It reads as follows:

A Page from Lazarus's Grimoire

 * "The time of my lord's true awakening is at hand. That fool Leoric was only able to resist him because he did not yet possess his full power. With the queen dispatched as a traitor, I may now devote myself fully to preparing the boy for the presence of my master..."