An old farmer lived on a farm in the mountains with his young grandson. Each morning Grandpa was up early sitting at the kitchen table   21    his book. His grandson wanted to be just like him and tried to   22    him in every way he could.

One day the grandson asked, “Grandpa! I try to read that book just like you do,   23    I don’t understand it, and what I do understand I   24    as soon as I close the book. What   25    does reading the book do?”

The grandfather quietly turned from putting coal in the stove and replied, “Take this coal basket down to the river and bring me back a basket of   26   .”