"High up in the North in the land called Svithjod, there stands a rock. It is one hundred miles high and one hundred wide. Once every thousand years a little bird comes to this rock to sharpen its beak. When the rock has thus been worn away, then a single day of eternity will have gone by."
The Life and Times of Rembrandt van Rijn
The Story of Mankind (1922 Newbery Award)
Van Loon's Lives