From Star Wars: Knights of the Old Republic II - The Sith Lords
After all that has happened, still you live. You are difficult to kill.
For one as limited as you, perhaps. To have fallen so far and learned nothing, that is your failure.
The failure is yours. No longer do your whispers crawl within my skull, no longer do we suffer beneath teachings that weaken us. And now you run in search of the Jedi... They are all dead, save one. And one broken Jedi cannot stop the darkness which is to come.