"Great was the triumph of Morgoth, and his design was accomplished in a manner after his own heart; for Men took the lives of Men, and betrayed the Eldar, and fear and hatred were aroused among those that should have been united against him. From that day the hearts of the Elves were estranged from Men, save only those of the Three Houses of the Edain." - The Silmarillion

“Among the tales of sorrow and of ruin that come down to use from the darkness of those days there are yet some in which amid weeping there is joy and under the shadow of death light that endures. And of these histories most fair still in the ears of the Elves is the tale of Beren and Lúthien."