We create our own demons.
Theoden: So much death. What can Men do against such reckless hate?
Aragorn: Ride out with me. Ride out and meet them.
Theoden: For death and glory.
Aragorn: For Rohan. For your people.
Theoden: Yes. Yes! The Horn of Helm Hammerhand will sound in the Deep one last time! Let this be the hour that we draw swords together!