It is. Was. [His brows knit together.] Still am, ultimately. This fix I have found, while only made possible by my being here and the people I have met in this place, is only prolonging the inevitable.

[As Pratt surmised, it is deeply personal, but with how Carlisle speaks about it, it's something he's lived with for a while now, and had to come to terms with. He's still working on dealing with the worst part of it all, the horrible revelation given to him relatively recently: that death isn't any kind of release for him.]

Are you familiar with the undead? Do they exist in your world?