On September 19, Alibaba went public (上市) on the New York Stock Exchange(纽约证券交易所). It shows that Ma Yun has done his business successfully. A short Chinese man seems to be the tallest man in the world right now. Ma used to be an English teacher. So far, he has become the richest man on the Chinese mainland.

    Ma was born in Hangzhou and grew up as a happy kid. At the age of twelve, he found that English was very interesting. Every morning he got up at 5 a.m., and then ran to a hotel near the West Lake where he could communicate with foreign tourists in English. He did it for nine years. The experience made him become a fantastic English speaker and also opened his eyes to the wide world. In a 1995 trip to the US, Ma was shown to the Internet for the first time. Seeing the chance, Ma returned to China and set up a website without knowing much about computers. Four years later, Ma set up Alibaba in Hangzhou. People called him “Crazy Jack Ma”. But fifteen years later, Alibaba has developed into the world's largest e-commerce (电子商务) company.

    For his eleventh birthday, Lin was given a gift that would shape his life. On that day his father took him to the Children's Activity Centre and said he could choose any course that interested him. There was just one

Requirement: Lin would have to promise to study it for at least one year.

    To that point Lin had had many hobbies, but none kept his interest for more than a week or two. His mum once gave him a bag of stamps to encourage stamp collecting. That hobby lasted a week. Then his father got him some paints hoping that Lin's artistic side would shine through. Those paints were now under his bed, still unopened. This time Lin's parents would let him decide.

    Lin's eyes moved down the noticeboard that listed all the courses on offer. He stopped at "Photography". He liked the idea of taking beautiful pictures but the notice said that each student needed their own camera. Although Lin's family weren't poor, they weren't rich either, and a camera cost a lot of money. He continued looking.

    The next course to catch his eye was "Language Art". He didn't even know what that meant. His father explained that it taught people how to make public speeches. Lin, a shy boy, could think of nothing worse.

    Then he saw it. "Cooking" sounded like something he'd like to do. It was inexpensive and convenient. It could be done alone and it was also creative.

    Based on Lin's hobby history, his dad had doubts, but he agreed. Much to his parents' surprise, Lin kept his promise. He studied cooking at the Centre every Saturday, and practised at home, making delicious meals for his family. Everyone looked forward to birthdays, when they could eat his cakes. Lin got great satisfaction from the pleasure his food brought to others.

    The months turned to years but his hobby never changed again.

    Now Lin is an adult and runs a successful restaurant. When customers say they enjoy his meal, he still gets the same pleasure he did as a child, and remembers the special gift he received "all those years ago.

    I found out one time that doing a favor for someone could get you into a lot of trouble. I was in the eighth grade at the time, and we were having a final test. During the test, the girl sitting next to me whispered something, but I didn't understand. So I leaned over her way and found out that she was trying to ask me if I had an extra pen. She showed me that hers was out of ink and would not write. I happened to have an extra one, so I took it out of my pocket and put it on her desk.

    Later, after the test papers had been turned in, the teacher asked me to stay in the room when all the other students were dismissed. As soon as we were alone she began to talk to me about what it meant to grow up; she talked about how important it was to stand on your own two feet and be responsible (负责任) for your own acts. For a long time, she talked about honesty and emphasized the fact that when people do something dishonest, they are really cheating themselves. She made me promise that I would think seriously about all the things she had said, and then she told me I could leave. I walked out of the room wondering why she had chosen to talk to me about all those things.

    Later on, I found out that she thought I had cheated on the test. When she saw me lean over to talk to the girl next to me, it looked as if I was copying answers from the girl's test paper. I tried to explain about the pen, but all she could say was it seemed very very strange to her that I hadn't talked of anything about the pen the day she talked to me right after the test. Even if I tried to explain that I was just doing the girl a favor by letting her use my pen, I am sure she continued to believe that I had cheated on the test.

    Life is full of surprises and you never know how things will turn out.

    Sir John Gurdon is a good example of this. As a boy, he was told he was hopeless at science and was at bottom of his class. Now, aged 79, the very same Gurdon shared the 2012 Nobel Prize in Medicine with Japanese stem cell (干细胞) researcher Shinya Yamanaka.

    Like so many scientists, Gurdon shows us where the power of curiosity and perseverance(坚持) can lead.

    When he was 15 in 1948, Gurdon ranked last out of the 250 boys at his high school in biology and every other science subject. Gurdon's high school science teacher even said that his dream of becoming a scientist was "quite ridiculous".

    In spite of his teacher's criticisms(批评), Gurdon followed his curiosity and kept working hard. He went to the lab early and left later than anyone else. He experienced thousands of failures.

    "My own belief is that we will, in the end, understand everything about how cells actually work," Gurdon said.

    In 1962, Gurdon took a cell from an adult frog and moved its genetic (基因的) information into an egg cell. The egg cell then grew into a clone of the adult frog. This technique later helped to create the sheep Dolly in 1996，the first cloned mammal(哺乳动物) in the world.

    In 2006, Gurdon's work was developed by Yamanaka to show that a sample(样本) of a person's skin can be used to create stem cells. Using this technique, doctors can repair a patient's heart after a heart attack.

    "Luck favors the prepared mind," Gurdon told the Nobel Prize Organization. "Ninety percent of the time things don't work, but when they do, you have to seize(抓住) the chance."