'Do you remember that bit of rabbit, Mr Frodo?' [Sam] said. 'And our place under the warm bank in Captain Faramir's country, the day I saw an oliphaunt?'
'No, I am afraid not, Sam', said Frodo. 'At least, I know that such things happened, but I cannot see them. No taste of food, no feel of water, no sound of wind, no memory of tree or grass or flower, no image of moon or star are left to me. I am naked in the dark, Sam, and there is no veil between me and the wheel of fire. I begin to see it even with my waking eyes, and all else fades.'
-J.R.R. Tolkien The Return of the King: Being the Third Part of The Lord of the Rings (London: Unwin Books, 1974 (1955)), p 189.