Mira's Letter to Haedrig 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 the Blacksmith's Belongings in New Tristram, after completing the A Shattered Crown quest.

It reads as follows:

"My dearest Haedrig,
Do not feel despair, my love. You did everything you could. Our time together meant more than words can say, but in the end, fate is a cruel mistress. Your strength is needed to end the horrors that beset this world. My final wish is that you find your path.
Love always,
Mira"
Community content is available under CC-BY-SA unless otherwise noted.