What Is the Secret of Success
      My father is an engineer. He works very hard.
      Once I asked my father what the secret of success was. He didn't say a word, but wrote a few words on a piece of paper and handed it to me. I looked at the paper. ()n it was written: A=
X+Y+Z.
      "What does it mean?"I asked.
      "A means success, explained my father. "X means hard, Y means good ways, and Z means you must stop talking and start to work."
      That's right. From then on, I tried my best to be better.