" Then sudden Felagund there swaying
Sang in answer a song of staying,
Resisting, battling against power,
Of secrets kept, strength like a tower,
And trust unbroken, freedom, escape;
Of changing and of shifting shape,
Of snares eluded, broken traps,
The prison opening, the chain that snaps. "

― J.R.R. Tolkien , The Silmarillion