Gollum’s Riddle

This thing all things devours,
Birds, beasts, trees, flowers,
Gnaws iron, bites steel,
Grinds hard stones to meal,
Slays king, ruins town,
And beats mountain down.

The answer is TIME.

John Ronald Reuel Tolkien (1892 – 1973) was an English writer, poet, philologist, and academic, who is best known as the author of the classic high fantasy works The HobbitThe Lord of the Rings, and The Silmarillion.