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Here is an astonishing and significant fact: Mental work alone can't make us tired. It sounds absurd. But years ago, scientists tried to find out how long the human brain could labor without reaching a stage of fatigue (tiredness). To the amazement of these scientists, they discovered that blood passing through the brain, when it is active, shows no fatigue at all! If we took a drop of blood from a day laborer, we would find it full of fatigue toxins (毒素) and fatigue products. But if we took blood from the brain of an Albert Einstein, it would show no fatigue toxins at the end of the day.

So far as the brain is concerned, it can work as well and swiftly at the end of eight or even twelve hours of effort as at the beginning. The brain is totally tireless. So what makes us tired?   

Some scientists declare that most of our fatigue comes from our mental and emotional attitudes. One of England's most outstanding scientists, J.A. Hadfield, says, “The greater part of the fatigue from which we suffer is of mental origin. In fact, fatigue of purely physical origin is rare.” Dr. Brill, a famous American scientist, goes even further. He declares, “One hundred percent of the fatigue of sitting worker in good health is due to emotional problems.”

    What kinds of emotions make sitting workers tired? Joy? Satisfaction? No! A feeling of being bored, anger, anxiety, tenseness, worry, a feeling of not being appreciated—those are the emotions that tire sitting workers. Hard work by itself seldom causes fatigue. We get tired because our emotions produce nervousness in the body.

    Most young architects—particularly those in big cities—can only dream about working in a building of their own. And making that dream come true often means finding a building no one else seems to want, which is exactly what happened to David Yocum and his partner, Brian Bell. Their building is a former automobile electrical-parts firm in Atlanta. From the outside, it looks too old, even something horrible, but open the door and you are in a wide, open courtyard, lined on three sides with rusting walls.

    In 2000,Yocum and Bell found this building in the city's West End. Built in 1947, the structure had been abandoned years earlier and the roof of the main building had fallen down. But the price was right, so Yocum bought it. He spent eight months of his off-hours on demolition, pulling rubbish out through the roof, because it was too dangerous to go inside the building. The demolition was hard work, but it gave him time to think about what he wanted to do, and “to treasure what was there—the walls, the rust, the light,” Yocum said. “Every season, more paint falls off the walls and more rust develops. It's like an art installation(装置) in there—a slow-motion show.”

    Since the back building had been constructed without windows, an all-glass front was added to the building to give it a view of the courtyard, and skylights were installed in the roof. The back of the building is a working area and a living room for Yocum and his wife. A sort of buffer(缓冲) zone between the front and the back contains a bathroom, a kitchen and a mechanical room, and the walls that separate these zones have openings that allow views through to the front of the studio and the courtyard beyond.

    Yocum and Bell, who have just completed an art gallery for the city, feel that the experience from the decoration of their building, focusing on the inside rather than the outside, has influenced their work. It has also given these architects a chance to show how they can make more out of less.

Uncivilized behavior by passengers unacceptable

    For the first time, airline passengers have been blacklisted for uncivilized behavior. Their names will remain on the blacklist for one or two years, according to an announcement by the China Air Transport Association on Saturday. The blacklisting means they will not be able to travel by air until their names are removed from the list.

    Blacklisting passengers who disobey the rules for traveling by air and so place their own interests before everything else, including safety, has long been overdue (迟到的，延迟的).

    There have been frequent reports of passengers making a scene when their flight was delayed or when they believed that they were not treated as they should be on a flight.

    Yet it is natural for some flights to be delayed because of reasons such as bad weather or mechanical problems that need to be solved. However, some passengers seem to take it for granted that their flight must take off at the time stated on their ticket, and they even assume that the members of the cabin crew are simply there to do their bidding(吩咐).

    They forget that they should behave themselves in the first place and that respect is reciprocal (互相给与的).There is no reason for them to be respected when they do not show enough respect for others.

    Observing rules can never be over-emphasized when it comes to flight safety. No one has the right to disregard the rules for any reason. Of course, airlines should provide quality services to meet the needs of passengers. Yet, even if passengers are not satisfied with the service provided, there is still no reason for them to flout the rules that are designed for the safety of all.

    The blacklisting of these three passengers should serve for others to know they have to toe the line (顺从集体).

    You may probably meet most of the powerful graduation speakers, here who are well-known people in their fields. I think the schools couldn't have picked better speakers than them, because they set good examples, deeply inspiring us in our daily life.

    1）Steve Jobs, Stanford University:

   "Remembering you're going to die, and the best way I know is to avoid the trap of thinking that you have something to lose. There is no reason not to follow your heart. Your tine is limited, so don't waste it living someone else's life. Don't let the noise of others' opinions drown out your own inner voice. …"

    2）Oprah Winfrey, Stanford University：

   "I consider the world, this Earth, to be like a school. And the secret I've learned to get ahead is being open to the lessons from the grandest universe of all. Don't react against a bad situation. And the solution will arise from the challenge. So don't give up easily, acting with responsibility. …"

    3）Bono, University of Pennsylvania：

   "For four years you've been buying, trading, and selling everything you've got in his market-place of ideas. Your pockets are full, even if your parent's are empty, and now you've got to figure out what to spend it on…The world is more flexible than you think and it's waiting for you to hammer it into shape…"

    4）Michael Del, University of Texas at Austin;

   "Now it's time for you to move on to what's next and obtain your desire. But you much must not let anything prevent you from taking those first steps. Don't spend so much time trying to choose the perfect opportunity, or sometimes you'll miss the right opportunity. Recognize that there will be failures obstacles. But you will learn from your mistakes and the mistakes of others."

    Does the amount of cash in a lost wallet influence how likely a person is to return it? Classical economic theories suggest that the greater the appeal, the less likely we are to be honest—but a new study turns the idea on its head, finding altruism(利他主义), and a powerful hate for viewing oneself as a "thief" outweigh the financial attraction.

    A team of researchers conducted a huge experiment concerning 355 cities in 40 countries. More than 17,000 identical wallets were dropped off at public places, each containing a grocery list, a key, and three business cards in the local language using made-up names and an email address. Some had no money while others contained the equivalent (等值) of $13.45.

    According to the research, people on average returned 40% of wallets with no money in them but 51%with money. It also shows extreme differences between countries. But although rates of people's honesty varied greatly from country to country, one thing remained remarkably constant: wallets with money, as opposed to no money, raised reporting rates.

    In the US, the UK and Poland, they repeated the experiment with even more money: $94.15, which increased reporting rates by an average of 11% compared to the smaller amount. They also found that having a key expanded reporting rates by 9.2%.

    The findings, which run counter to a fundamental principle of classical economics, suggest honesty, altruism and self-image can sometimes be more influential than economic self-interest.

    A purely economic approach to behavior suggests people would keep the wallets with the larger amounts of money due to the increased financial reward, but economics often doesn't account for a person's sense of honesty or self-image, according to behavioral scientists. Altruism also influenced the findings, the researchers say. Since the key is valuable to the owner but not the finder, this pointed toward an altruism concern in addition to the cost of negatively updating one's self image.

    Families around the country are finding new options for their children's midday meal thanks to a growing number of delivery options catering to students. Kiddos Catering in Chicago adopts a method of providing restaurant meals to schools that contract with it. Owner Michelle Moses and her staff work with area restaurants to create a variety of kid-friendly choices and deliver the meals to the schools five days a week. Parents select the lunches from an online order form that lists the day's featured restaurant and its menu choices.

    "Each day is a different restaurant with six to 10 menu options," she said. "It offers so much choice to kids." The service appeals to parents because they think their children are less likely to toss out restaurant food than a packed lunch, Ms. Moses said. The schools appreciate that Moses handles the ordering, payment, pickup, and food distribution in the cafeteria. "Schools really want to be in the business of educating kids," she said. "They don't want to be in the food and beverage(餐饮) business."

    That doesn't mean that schools always like it when teens (or parents) take it upon themselves to order food through phone apps. Many schools have banned that practice, citing safety concerns about delivery drivers showing up at school unannounced and the burden of tracking down students to alarm them that their meals have arrived.

    "These types of deliveries pose an unnecessary security risk for students and staff," said Bernard Watson, director of community relations for Gwinnett County Public Schools in Suwanee, Ga. "In addition, our award-winning school nutrition program provides students with a wide variety of tasty, nutritious meals on-site, so there is no need to order food from outside."

    Jacob Levin, a recent graduate of Bexley High School in Bexley, Ohio, relied on a sub shop to deliver a sandwich to him during lunchtime meetings or other appointments that conflicted with his lunch period. "It was a convenient option. In most cases, I would not have been able to eat at school if it weren't for the delivery option," he said. "Having a restaurant-quality sub also was much more enjoyable than cafeteria food."