The Crow and the Pitcher, by Adam, Adapted from Aesop

A Crow, half-dead with thirst came upon a pitcher. He could not reach the water. He tried and he tried, but he couldn't reach, so he took a lot of pebbles and dropped them into the pitcher. Then the water mounted up. The Crow then drank as much as he wanted and saved his life.

Little by little does the trick.