Newton，the great British scientist，was often so deep in his thoughts that he would forget to eat.
One day he invited a friend of his to dinner.When the food was orought to the table，Newton was still busy in his study.His friend，who knew him well，sat down and waited for him.A long time passed，but Newton did not come.His friend decided that Newton must have lost imself in some new theory and forgotten all about the dinner.So he began eating without waiting for Newton and helped himself to the chicken on the table.
When he had finished, he thought he would play a trick on his friend. He put all the chicken bones back on the dish and covered them with the dish cover. then he quietly left the house. He was quite certain that his trick would work.
Several hours later, Newton came out of his study, feeling very hungry. He saw the dish on the table and so he sat down. When he lifted the cover and saw the chicken bones, he was very surprised.He turned，looked at the clock，and saw that it was long past his usual dinner time.
"Well，well，"he said to himself，"I thought I hadn't had my dinner，but I see I was wrong."
Getting up from the table，he went back to his study（书斋）and began to work again，thinking that he had eaten his dinner at the usual hour and had foigotten all about it.