
it is not only the sworn DUTY of a maester
Game of Thrones Season 2, Episode 9

We do not choose our destiny,
but we must do our DUTY, no?
Game of Thrones Season 3, Episode 8

Not if you lot do your DUTY for
however long it takes to beat them back.
Game of Thrones Season 4, Episode 9

Isn't it a man's DUTY to be
drunk at his own wedding?
Game of Thrones Season 3, Episode 8

Never failed in his DUTY.
Game of Thrones Season 3, Episode 4