Honour
From Tardis Wiki, the free Doctor Who reference
The Ice Warriors valued honour. (TV: The Curse of Peladon, Cold War, Empress of Mars, etc.)
Jules Renan claimed that there could be no loyalty or honour "where anarchy prevail[ed]." (TV: The Reign of Terror)
Mickey Smith found it to be an honour to take on Clive's mantle of proving the truth about the Doctor to the world, after Clive's death during the Dummy Massacre on 26 March 2005. (PROSE: The Doctor Was Involved in the Dummy Massacre)