I grew up poor. We had little money, butplenty of love and attention. I understood that no matter how poor a person was, they could still afford a dream. My dream was athletics.

    By the time I was sixteen, I was good at baseball and football. My high-school coach was Ollie Jarvis. He not only believed in me, but taught me the difference between having a dream and showing conviction（信念）.

    One summer a friend recommended me for asummer job. This meant a chance for money in my pocket — cash for dates withgirls, certainly, money for a new bike and new clothes, and the start of savings for a house for my mother.

Then I realized I would have to give up summer baseball to handle the work schedule, and that meant I would have to tell Coach Jarvis I wouldn't be playing. I was dreading（害怕）this, but my mother said: "If you make your bed, you have to lie in it."

When I told Coach Jarvis, he was as madas I expected him to be. "Your playing days are limited. You can't afford to waste them," he said.

   I stood before him with my head hanging, trying to think of the words that would explain to him why my dream of buying my mom a house.

"How much are you going to make at this job, son?" he demanded.

"Three twenty-five an hour," I replied.

"Well," he asked, "is $3.25 an hour the price of a dream?"

    That question laidbare for me the difference between wanting something right now and having agoal. I devoted myself to sports that summer, and within the year I was drafted by the Pittsburgh Pirates to play rookie-league ball, and offered a $20,000 contract. I signed with the Denver Broncos in 1984 for $1.7 million, and boughtmy mother the house of my dream.

    I used to believe courtesy(礼貌) was a thing of the past. Very seldom have I encountered a courteous human being in this modem era of the so called Generation X.

    Recently, I had to change my thinking, when I came face to face with just such a human being. I had gone to a happening coffee place, with two of my grown up daughters. The place was crowded with the usual loud crowd and we had to climb a sleep flight of stairs in order to find an empty table. After enjoying coffee and snacks, we were at the steep descent down the stairs, where the narrow space made climbing down only possible in a single file, with hardly any space for another person to either climb up or come down.

    Just as I was in the middle of my descent, a gentleman entered the main entrance of the restaurant which right in front of the staircase. I was sure I would be pushed roughly by this man who will want to go up in a hurry. I kept coming down as fast as I could, holding on to the banister (栏杆), instead of my advanced years. My agile daughters were already down, looking up at me worriedly, hoping I would reach them before the stranger strange started up the stairs, knowing I was a nervous sort.

    Nearly reaching them, I noticed the man still standing near the door. I reached my daughters and passed the stranger at the entrance door which he kept holding open. I looked back thinking he was still at the door, deciding whether to go in or find another less crowded place. I saw him going up the stairs, two at a time. I told my daughters about it and all three of us felt had that we did not even thank the courteous gentleman who was actually holding the door open for us ladies to pass through before going up.

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    How to deal with waste has been a problem since humans started producing it. As more and more people choose to live close together in cities, the waste-disposal (处理) problem becomes increasingly difficult.

    During the eighteenth century, it was usual for several neighboring towns to get together to select a faraway spot as a dump site. Residents or trash haulers (垃圾拖运者) would transport household rubbish, rotted wood, and old possessions to the site. Periodically (定期的) some of the trash was burned and the rest was buried. The unpleasant sights and smells caused no problem because nobody lived close by.

    Factories, mills, and other industrial sites also had waste to be disposed of (处理). Those located on rivers often just dumped (倾倒) the unwanted remains into the water. Others built huge burners with chimneys (烟囱) to deal with the problem.

    Several facts make these choices unacceptable to modem society. The first problem is space. Dumps, which are now called landfills, are most needed in heavily populated areas. Such areas rarely have empty land suitable for this purpose. Property is either too expensive or too close to residential (住宅区的) neighborhoods. Long-distance trash hauling has been a common practice, but once farm areas are refusing to accept rubbish from elsewhere, cheap land within trucking distance of major city areas is almost nonexistent (不存在).

    Awareness (意识) of pollution dangers has led to more strict rules of waste disposal. Pollution of rivers, ground water, land and air is a price people can no longer pay to get rid of waste. The amount of waste, however, continues to grow.

    Recycling efforts have become commonplace, and many towns require their people to take part. Even the most efficient recycling programs, however, can hope to deal with only about 50 per cent of a city's reusable waste.

    Recently a new study has been carried out. It shows students who write notes by hand during lectures perform better on exams than those who use laptops.

    Students are increasingly using laptops for note-taking because of speed and legibility (清晰度). But the research has found laptop users are less able to remember and apply the concepts they have been taught.

    Researchers performed experiments that aimed to find out whether using a laptop increased the tendency to make notes “mindlessly” by taking down word for word what the professors said.

    In the first experiment, students were given either a laptop or pen and paper. They listened to the same lectures and were told to use their usual note-taking skills. Thirty minutes after the talk, they were examined on their ability to remember facts and on how well they understood concepts.

    The researchers found that laptop users took twice as many notes as those who wrote by hand. However, the typists performed worse at remembering and applying the concepts. Both groups scored similarly when it came to memorizing facts.

    The researchers' report said, “While more notes are beneficial, if the notes are taken mindlessly, as is more likely the case on a laptop, the benefit disappears.”

    In another experiment aimed at testing long-term memory, students took notes as before but were tested a week after the lecture. This time, the students who wrote notes by hand performed significantly better on the exam.

    These two experiments suggest that handwritten notes are not only better for immediate learning and understanding, but that they also lead to superior revision in the future.

    The government says spending £4.2 million on planting trees in towns and cities will improve the quality of people's lives. But do trees really make people happy?

    Some British and US surveys suggest a thick green lawn, or well-landscaped yard can increase the government property prices by as much as 15%. But the government's Big Tree Plant campaign, which aims to plant one million trees in English urban areas over the next four years, says trees are not only good for our bank balance, but they do wonders for our happiness. And it says getting people to plant makes communities even happier. So do people really care about trees and do they improve lives? Margaret Lipscombe, director of urban programs at the Tree Council, says, “Not only are trees beautiful but they are practical. Trees also encourage healthier lifestyles and studies have shown people are calmer when trees are in their community,” A US study suggests that patients who have a view of nature through hospital windows recover better after operations.

    Ms. Lipscombe says that the trees have also been known to slow down the traffic because drivers will go more slowly when there is something in their sights. She admits some people have negative feelings about trees because they worry about slipping on berries, bird droppings on cars or blocked light.

    Ms. Lipscombe also says when she first moved into the area, there were no trees on her street. “I t was an area where there were lots of factories with high walls. It looked like an abandoned place that you didn't want, especially as a woman on your own. Now everything is different. With lots of trees around, the street looks more attractive. People are not as frightened and no longer run down the road to get home. The trees also bring people out onto the street and make a stronger community feel.”

    The view you adopt for yourself significantly affects the way you lead your life. It can determine whether you become the person you want to be and whether you achieve the things you value. How does this happen? How can a simple belief have the power to transform your psychology and, as a result, your life?

    Believing that your qualities are carved in stone­the fixed mindset­creates an urgency to prove yourself over and over. Some of us are trained in this mindset from an early age. Even as a child, I was focused on being smart, but the fixed mindset was really stamped in by Mrs. Wilson, my sixth­grade teacher. She believed that people's IQ scores told the whole story of who they were. We were seated around the room in IQ order, and only the highest­IQ students could be trusted to collect homework, or take a note to the principal. She was creating a mindset in which everyone in the class had one consuming goal­look smart, don't look stupid.

    I've seen so many people with this one consuming goal of proving themselves­in the classroom, in their careers, and in their relationships. Every situation calls for a confirmation of their intelligence, personality, or character. Every situation is evaluated: Will I succeed or fail? Will I look smart or stupid? Will I feel like a winner or a loser?

    But doesn't our society value intelligence, personality, and character? Isn't it normal to want these qualities? Yes, but...

    There's another mindset, the growth mindset, which is based on the belief that your basic qualities are things you can develop through your efforts. Although people may differ in every which way­in their inborn talents, interests, or characters­everyone can change and grow through efforts and experience. Did you know that Darwin and Tolstoy were considered ordinary children? That the photographer Cindy Sherman, who has been on almost every list of the most important artists of the twentieth century, failed her first photography course? That Geraldine Page, one of our greatest actresses, was advised to give it up for lack of talent?

    You can see how the belief that valuable qualities can be developed creates a passion for learning. Why waste time proving how great you are, when you could be getting better? Why hide weaknesses instead of overcoming them? And why seek out the tried and true, instead of experiences that will stretch you? The passion for stretching yourself and sticking to it, even when it's not going well, is the feature of the growth mindset. This is the mindset that allows people to achieve success during some of the most challenging times in their lives.