But here is the actual sad truth....
The Blades have been attempting to use the Dragonborn to make him/her into their tool of violence and killing.
They will not help me unless I kill Paarthunax, and they say that they would be breaking their oath to protect Tamriel of dragons if they helped me. And they say I'm not welcome there at Sky Haven Temple until "Justice"
has been on Paarthunax for what he had done to mortal kind thousands of years before.
Paarthunax may have done bad things while he served Alduin, but he helped the original heroes defeat Alduin after Paarthunax changed his own ways. And he has been leading the Graybeards and has helped the Dragonborn in his quest to defeat Alduin. As far as i'm concerned, Paarthunax has made up for ALL the atrocities he has committed against mortal kind.
The Greybeards were definately right, The Blades were always trying to use the Dragonborn. And whether they
know it or not, by refusing to help or serve the Dragonborn, they are still breaking their oath...because The Blades had sworn loyalty to the Dragonborn(see "The Book of the Dragonborn" and "The Rise and Fall of The
Blades"). And as far as i'm concerned, if The Blades are going to try to make me their puppet, then they are an
enemy.
I have tried to kill Delphine and Esbern, but they are unkillable characters. If the guys at Bethesda see this, I want them to make a patch or update that will disable their unkillable function so that I can kill them. And I'd like them to make it so that we can become the new leader.
No matter what, I will not kill Paarthunax.