The Magic Walking-Stick by John Buchan is about a pair of walking sticks in which one stick must have a practical use to function and one must not have a practical use to function – only the book's hero does not know which he has. Excerpt: "Magic," gasped the dull of mind, When the harnessed earth and skies Drew the nomads of their kind To uncharted empires- Whispers round the globe were sped, Construed was the planets' song."