Greg Thomas
Here is a riddle:
This thing all things devours, Birds, beasts, trees, and flowers.
Gnaws iron bites steel, Grinds hard stones to meal,
Slays king, ruins town, And beats high mountain down.
The answer to this riddle is time. Time is an important resource; all given the same amount each day. If we have such a limited resource, how shall we spend our time?