The Metaphysika Mysterium

The Metaphysika Mysterium is a book found in Dishonored, The Brigmore Witches and expanded upon in Dishonored: The Corroded Man.

First Excerpt
[Excerpt from a longer banned work on supernatural ritual]

''It is said that we should not sully our hands when combating the forces of the Void. My studies have been deemed heretical by my brothers, but the rewards have been invaluable. I have harnessed the same energies employed by the Outsider and his accused followers while avoiding their corruption.''

I will prescribe a two-fold method in this text.

Indirection: As the unwholesome powers of the Outsider use living flesh as a conduit, we can avoid being tainted by using the flesh of others instead.

Containment: By using Channels and Barriers we can focus these Void energies in a raw state, shielding them from the perverse perspectives of the Outsider.

Second Excerpt
[Excerpt from a longer, banned, work on supernatural ritual]

''There are some depraved rituals which not even the most adept can describe, the very act of recording the atrocity of their nature enough to corrode the mind of they who dare approach the task. It is said that even the whispering of such eldritch spells weakens the tether that links this world to the Void, the very connection that we draw upon in order to command the magicks of the ages.''

Location

 * The first excerpt can be found:
 * In Dishonored, on a shelf in the locked workshop in the Back Yard during the mission High Overseer Campbell.
 * In The Brigmore Witches, on a table in Daud's office during the mission Choosing Your Mark.
 * In The Corroded Man, the second excerpt is quoted at the beginning of Chapter 25.

Das Mysterium Metaphysikum Misterium Metafizyczne El misterio de la metafísica (Libro) Il Metaphysika Mysterium Метафизическая мистерия