Once there was a man who was a very good archer. He could shoot one arrow, hit the target, and then with another arrow, split the first arrow. He would go from village to villa demonstrating his skills. And everybody would gather and applaud, because they had never seen anything like it.
Once day, he came to a little village, shot an arrow from his bow, and everybody applauded, “Bravo, bravo.” Then, after everybody had finished applauding, a voice in the back of the crowd called out, “Agh. It’s only a matter of practice.”
The archer heard that, and it disturbed him, but he continued on. He took another arrow, shot it, split the first arrow, and again everybody yelled, “Bravo, bravo, bravo.” And the same voice said, “Agh. It’s only a matter of practice.”
After his show was over, the archer was upset. Here he was, demonstrating his greatest skill, and this man kept saying, “Only a matter of practice.” So he went to the back of the crowd and found the man. He was carrying a bamboo pole, with one pot of oil hanging from the front and another from the back, trying to sell oil.
The master archer said to him, “How dare you say it’s only a matter of practice? What do you do? You sell oil. Look at me. People come to see me from far away bacause my aim is so good.”
The man with the oil looked at the archer and said, “Agh, it’s only a matter of practice. Now, let me show you.”
So the oil merchant pulled out a bottle, put a coin that had a hole in it on top, and poured the oil from his pot through the small hole without spilling a drop. He turned to the archer and said, “Now, it’s your turn.” And the archer didn’t even try. He understood that it is a matter of practice.[source: http://www.docstoc.com/docs/22831797/The-Archer-and-the-Oil-Merchant]