I do my part ...
He tells an African fairy tale of a scary fire broke out in the forest. Of all the animals, small and large, on the run to get safe, except a tiny hummingbird that stubbornly did back and forth, from the plants on fire to the lake nearby, with a drop of water in the beak, to try to turn off the fire.
And when the lion asked him why he never behaved so the hummingbird replied: "I do my part".
Source www.pangeaonlus.org