Quicker than a bray

Once upon a time there was a chalk selles that had many donkeys; they were thin, ugly and dirty. One that was the ugliest of all, but when the master cried out, "Let's go, you hot-blooded!"... The donkey raised his head, lowered his ears, and turning his tail like a propeller, he left faster than a bray!

One should not be deceived by appearances, because even a donkey can have a noble heart!