Skyrim:Good Intentions

Quick Walkthrough
#Speak with Tolfdir.
#Listen to Tolfdir.
#Follow Ancano.
#Speak with Quaranir.
#Find the Augur of Dunlain.
#Report to Savos Aren.

Detailed Walkthrough
An Orb Worth Noting
thumb|Quaranir freezing time to speak with you 
After your conversation with Urag gro-Shub about the newly recovered books, the librarian suggests you speak with Tolfdir about the findings. Tolfdir can be found in the Hall of the Elements, in deep rumination about the orb from Saarthal, or the Eye of Magnus. Let him know about your findings and he will begin to discuss the Eye with you. He will explain how the markings seem to be unique, as they do not appear to be Elven, Daedric, or Ayleid. Ancano will interrupt Tolfdir's musings and demand that you follow him to meet a mysterious visitor who has asked to speak with you.
A Moment in Time
Follow Ancano to the Arch-Mage's quarters and you will meet Quaranir, another representative from the Psijic Order. Quaranir will freeze time in order to speak privately with you. He will explain that you must prevent anyone from using the Eye of Magnus, as he fears the consequences its misuse will bring. He will suggest that you seek out the Augur of Dunlain within the College, who may be able to give you better guidance. Quaranir will then unfreeze time and leave, confusing Savos and angering Ancano.
Speaking to the various mages about the Augur will lead you to either Tolfdir or Mirabelle Ervine for more information. Tolfdir will tell you about the Augur immediately, but you must pass an easy-level Speech check to convince Mirabelle. Either way, you will learn that the Augur is a former student at the College, but something befell him as a result of his own ambitions. He can now be found in The Midden in his altered state.
thumb|left|The Augur of Dunlain

The Unearthing
You can access the Midden from a trap door in the northern corner of the courtyard or by the stairwell in the Hall of Countenance. Making your way to the Augur of Dunlain is relatively easy; you will likely encounter a few ice wraiths and frostbite spiders, along with a small number of draugr and skeletons.
Proceed into The Midden Dark and continue until you reach a locked door. When you approach it, the Augur will warn you from the other side that your efforts will only end in disappointment. The door will then open.

The Augur
The Augur will inform you that others (including Ancano) have previously sought information about the Eye of Magnus without realizing the dangers it poses.  While the Augur speaks only of disaster for the Thalmor, he seems encouraged by your path and offers to help you further. He will then inform you that you will need the Staff of Magnus to avert the disaster the Psijics warned you about, and urges you to share this information with Savos Aren.

More than a Mere Apprentice
Speak to Savos and inform him of the Augur's message. It takes a bit of convincing to get Savos motivated and interested in this turn of events. Eventually, he will direct you to Mirabelle Ervine for more information on the Staff and then give you the Mage's Circlet, impressed with your performance thus far.

Notes
If you follow Quaranir out of the College after he freezes time in the Archmage's Quarters, he will walk through Winterhold and enter The Frozen Hearth, but never appear inside.
After you receive the objective to "Report to Savos Aren", Atronach Forge Recipes will begin to appear in random loot.

Bugs
 
 
  Open the console command and manually advance via  .
  Quaranir supposedly spawns far from Winterhold, using the console command   and then  , this will move him to the College, and the quest should proceed normally.
 
  Open the console command and manually advance the quest stage by entering  . The quest marker above Ancano's head should disappear. The door to the Arch-Mages Chamber should be unlocked. Now you are free to talk to the Psijic Monk and continue the storyline.

Quest Stages