A little girl was given so many picture books on her sh birthday that her father thought his daughter should give one or two of her new books to a little neighbor boy named Robert.
Now, taking books, or anything else, from a little girl is like taking candy from a baby, but the father of the little girl had his way and Robert got two of her books. "After all, that leaves you with nine," said the father, who thought he was a philosopher and a child psychologist (心理学家), and couldn’t shut his big stupid mouth on the subject.
A few weeks later, the father went to his library to look up "father" in the Oxford English Dictionary, to feast his eyes on (一饱眼福) the praise of fatherhood through the centuries, but he couldn’t find volume F-G and then he discovered that three others were missing, too--A-B. L-M, V-Z. He began to search his household, and learned what had happened to the four missing volumes.
"A man came to the door this morning," said his little daughter, "and he didn’t know how to get from here to Torrington, or from Torrington to Winsted, and he was a nice man, much nicer than Robert, and so I gave him four of your books. After all, there are thir volumes in the Oxford English Dictionary, and that leaves you with nine. \
This short story tells us that ______.