You should have acted. They're already here. The Elder Scrolls told of their return. Their defeat was merely delay until the time after Oblivion opened, when the sons of Skyrim would spill their own blood. But... there is one they fear. In their tongue he is Dovahkiin; Dragon Born!
Here, you can find a complete collection of lines, dialogue, quests and stories I've written for my various Skyrim projects thus far. Feel free to use them for your own mods, as long as proper credit is given, and no profit is made. Thanks!