Some say no evil thing that walks by night,
In fog or fire, by lake or moorish fen,
Blue meagre hag, or stubborn unlaid ghost
That breaks his magic chains at curfew time,
No goblin, or swart fairy of the mine,
Hath hurtful power o'er true virginity.
-- John Milton (1608-1674)
-- Comus, Line 432
