There must be some use for the talent heaven granted me. How Much Is Four Minus Four？
One day，the teacher inquiredinquire v.询问， 问明， 查究 Peter：“How much is four minus four？”Peter was tonguetired．The teacher got angry and said：“What a fool！ You see，if I put four coins in your pocket，but there is a hole in your pocket and all of them leak outleak out v.泄漏，now what is left in your pocket？”“The hole，”replied Peter．
天生我材必有用。
四减四等于几？
一天，老师问彼得：“4减4等于几？”彼得张口结舌答不上来。老师生气地说：“真笨！你想，我要是往你口袋里放4个硬币，而你的口袋上有个窟窿，硬币全漏掉了，那么，你衣袋里还剩下什么？”“窟窿。”彼得答道。