Edison had a quick mind about inventions (发明), but not always about other things. One day he got a notice. It said he must pay some money to the government by the next day. If he was late, he would have to pay more money.
Edison went to the city office, many people were waiting there in line to pay. While he waited, his mind was busy with ideas about a new invention. When he arrived at the little window, the man in it said to Edison, "Young man, what's your name?"
Edison looked at the man, surprised.
"I-I-I don't know." He said.
"Then I can't help you." The man said and told him to leave.
Other people paid the man, Edison stood there and tried to remember his name. The day ended, and he met a friend. He had to ask the friend what his name was.