Editing Librarian (section)

==History==
Back during the [[Great Crusade]], when the [[Primarch]]s were reunited with their legions, the Space Marines began discovering some of their new recruits had psychic potential. Wanting to utilize this and prevent them from falling to [[Warp]] corruption, [[Magnus the Red]], [[Sanguinius]], and [[Jaghatai Khan]] proposed the creation of Librariums, divisions of the Legions which would take in psyker Space Marines and train them to use their powers for the good of the [[Imperium of Man]]. Seeing the possible good, the [[God-Emperor of Mankind|Emperor]] agreed, authorizing the go ahead. When the Librarium proved effective, they spread to other Legions. However, a number of Primarchs, namely [[Mortarion]] (he's got psyker issues that would make a Culexus blush), [[Rogal Dorn]], [[Corax]], and [[Leman Russ]] opposed the training of Librarians and wanted the program shut down, believing that the powers of the Warp could not be controlled (<s>Russ maintained that [[Derp|Rune Priests were not actually Librarians,]] given that the Space Wolves insistently maintained that they drew power from [[Fenris]], not the Warp</s> [[Council of Nikaea#Why_Nikaea_really_happened.3F|except not really...]]). Further concern was raised with Magnus's constant peering into the [[Warp]] to learn more about his powers, which Russ and Mortarion felt warranted censure.

===Then Nikaea Happened===
See [[Council of Nikaea]] for the highlights.

Long story short, Big Emps banned Librarians, but [[Magnus|not]] [[Leman Russ|everyone]] [[Jaghatai Khan|listened]].

==="Modern" 40k===
[[File:DA Librarian.jpg|thumb|right|300px|[[Star Wars|I AM THE SENATE!]]]]
There is obviously a bit of [[1984|historical revisionism]] going on, because most accounts from the 41st Millenium look back at Nikaea and suggest that the Emperor actually said "[[derp|yes]]" to Librarians, so long as they were trained in a controlled and careful manner. ''Which is what the [[White Scars]] and [[Blood Angels]] were doing at the time anyway, it was only the [[Thousand Sons]] who ruined it for everyone by thinking there should be no limits.''

By M41 it has been left up to individual Chapters whether or not to use Librarians, and most Chapters have Librarians to some degree or another, with the noticeable exceptions of the [[Black Templars]] and the [[Marines Malevolent]]; the former is for reasons that nobody can explain (some theories include a gene-seed quirk or a byproduct of the Cacodominus's destruction; the Black Templars just shrug and say that it's just the Emperor's will), and the latter is probably because they are the biggest dickheads in the galaxy and the Black Ships make sure they don't get any Psykers for Gene Seed implantations or the fact they could be loyalist [[Iron Warriors]]. And now with the creation of [[Primaris Marines]] comes their version of the [[Primaris Librarian|Librarians]]. Also, seems like Morty [[Malignant Plaguecaster|compromised]] in the end.