"(...)
Strong was the will and heart of Niënor, and she strove against Glaurung; but he put forth his power against her. 'What seek you here?' he said.
And constrained to answer she said: 'I do but seek one Túrin that dwelt here a while. But he is dead, maybe.'
'I know not,' said Glaurung. 'He was left here to defend the women and weaklings; but when I came he deserted them and fled. A boaster but a craven, it seems. Why seek you such a one?'
'You lie,' said Niënor. 'The children of Húrin at least are not craven.
We fear you not.'
Then Glaurung laughed, for so was Húrin's daughter revealed to his malice. 'Then you are fools, both you and your brother,' said he. 'And your boast shall be made vain. For I am Glaurung!'
Then he drew her eyes into his, and her will swooned. And it seemed to her that the sun sickened and all became dim about her; and slowly a great darkness drew down on her and in that darkness there was emptiness; she knew nothing, and heard nothing, and remembered nothing."

-J.R.R. Tolkien, "The Children of Húrin"