The Old Diary is a tome in the first act of Diablo III. It is needed to complete the achievement A Quick Study and can be found in a Keepsake Box on the Old Tristram Road or in The Old Ruins.
It reads as follows:
The Old Diary is a tome in the first act of Diablo III. It is needed to complete the achievement A Quick Study and can be found in a Keepsake Box on the Old Tristram Road or in The Old Ruins.
It reads as follows: