A maester of the Citadel, chained and sworn,
Game of Thrones Season 5, Episode 7
In the Citadel,
we lead different lives
Game of Thrones Season 7, Episode 1
but everyone in the Citadel,
Game of Thrones Season 7, Episode 1
So, why did the Citadel take your chain?
Game of Thrones Season 3, Episode 7
You don't get thrown out of the Citadel
without good reason.
Game of Thrones Season 6, Episode 3