- "Give it up. It's never going to happen."
- — Pensées-Profondes on the book's subject[src]
A Study into the Possibility of Reversing the Actual and Metaphysical Effects of Natural Death, with Particular Regard to the Reintegration of Essence and Matter is a highly-regarded book on the subject of reversing death, written by the wizarding philosopher Bertrand de Pensées-Profondes. It is mentioned by Albus Dumbledore in his notes of The Tales of Beedle the Bard.