User blog comment:Xenronnin/NEW! Skyrim DLC - Dragonborn Unleashed (idea)/@comment-211.28.196.128-20121205051746/@comment-26474238-20121205052410

The DragonBorn are never born simply to kill every last dragon they see. They merely have the spirit of a dragon, and the ability to learn the Thu'um, as well as being able to absorb the spirits of other dragons. Hell, many DragonBorn never even got the chance to kill a dragon, and so they never even realized their potential. For instance, Emperor Septim from TES:Oblivion. Not even to mention that Martin Septim himself becomes the aspect of Akatosh, a dragon, after breaking open the Amulet of Kings and infusing himself with the blood of the Aedra.