Edmund Dulac,
Edmund Dulac's Fairy-Book: Fairy Tales of the Allied Nations
“ In a spot of that mountain—in a den where a serpent lies asleep—there is a fox, and in its heart there hides a bird. That bird is the storehouse of my strength. One flutter of its wings would scatter a whole army; one beat of its heart would shake the whole world—if the fox so willed it. But the will of the fox is over mine, and what strength I have comes from the bird through the will of the fox. And that fox is the hardest thing in the world to catch: it can take any shape it likes. ”
