" The people would have noticed the giant ash tree at the center of the wood, and then, in time, they’d have noticed the little spring bubbling up among its roots in spite of the pebbles piled there to conceal it. And that would have been a disaster so immense that this weary old earth, owned or not to its fiery core, would have trembled on its axis like a beetle on a pin. "

― Natalie Babbitt , Tuck Everlasting