The shepherd boy:
...the King said: "The third question is, how many seconds of time are there in eternity." Then said the shepherd boy said:"In Lower Pomerania is the Diamond Mountain, which is two miles and a half high, two miles and a half wide, and two miles and a half in depth; every hundred years a little bird comes and sharpens its beak on it, and when the whole mountain is worn away by this, then the first second of eternity will be over."