Here is an astonishing and significant fact: Mental work alone can't make us tire. It sounds absurd. But a years ago, scientists tried to find out how long the human brain could labor without reaching a stage of fatigue (疲劳). 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(情绪的) 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.

    In the late 1990s, Google was just a start-up company operating out of a garage in PaloAlto, California. Co-founders Larry Page and Sergey Brin started the company while studying at Stanford University. Google's founders and its employees, then understood some of the challenges that entrepreneurs(创业者) around the world may face. An entrepreneur is a person who starts a business. They must be willing to risk financial loss in order to make money.

    Mary Grove is the director of a program called Google for Entrepreneurs. She said Google wants to help new start-up businesses grow and be successful.

Google for Entrepreneurs has opened campuses around the world. Entrepreneurs in each city can use Google's

    buildings without paying.Entrepreneurs can work with each other and learn from people who are more experienced in business.

    Yeram Kwon is the head of a company in South Korea.Her business is called L.M.Lab. It makes a product that helps people learn to perform the lifesaving technique called CPR. She said she has learned how to solve some of her business problems by attending Google events in Seoul.

    Outside of its own buildings in these cities, Google provides financial support and resources for partner organizations around the world. Building partnerships is a way for Google to spread the idea of entrepreneurialism around the world. Google can use its network to help find people who want to invest in start-up businesses. Those people need to be ready to take risks. That is something Kwon said that makes some Koreans uncomfortable. "Most

    Korean people think that it is much safer to work for big companies like Samsung and LG," she said. But, Kwon said the Korean government and technology companies are now supporting people willing to take business risks.

    Harvard University in the United States has been ranked as the university with the best “reputation” in the world.

    The Times Higher Education magazine has listed 200 top universities all over the world based on how they are regarded by a group of international college teachers. That is to say, the list measures how universities are regarded, rather than how they actually performed.

    “A subjective, word-of-mouth (口碑的) quality such as “reputation” has genuine economic value for universities,” said Simon Marginson, professor of higher education at the University of Melbourne in Australia.

    “Reputation is not just an impression, though it might not be as reliable as performance by objective indicators (客观指标),” said Prof Marginson.

    Based on the views of 13,000 college teachers around the world, it confirms the power of the big US universities, which dominate this list. Seven of the top 10 are US universities, headed by Harvard and Massachusetts Institute of Technology (MIT). Furthermore, 14 of the top 20 are from the US. Cambridge is the highest ranking UK university in the list, in third place, with Oxford ranked as sixth.

    “For students applying to university, reputation might be hard to quantify, but was an important part of the attractiveness,” said the president of Cambridge University's students' union, Rahul Mansigani.

    “Reputation makes a huge difference. If there is an idea that somewhere is great, it will get lots of good people applying whether it's true or not. Factors such as a sense of history and the presence of outstanding college teachers were part of the reputation of Cambridge,” he said.

    French writer Frantz Fanon once said, “To speak a language is to take on a world, a culture. ” Since the world changes every day, so does our language.

    More than 300 new words and phrases have recently made it into the online OxfordDictionary, and in one way or another they are all reflections of today's changing world.

    After a year that was politically unstable, it's not hard to understand the fact that people's political views are one of the main drives of our expanding vocabulary. One example is “clicktivism”, a compound of “click” and “activism”. It refers to “armchair activists”—people who support a political or social cause, but only show their support from behind a computer or smartphone. And “otherize” is a verb for “other” that means to alienate (使疏远)people who are different from ourselves—whether that be different skin color, religious belief or sexuality.

    Lifestyle is also changing our language. For example, “fitspiration” —a compound of fit and inspiration—refers to a person or thing that encourages one to exercise and stay fit and healthy.

    The phrase “climate refugee”—someone who is forced to leave their home due to climate change—reflects people's concern for the environment.

    According to Stevenson, social media was the main source for the new expressions. “People feel much freer to coin their own words these days, ” he said.

    But still, not all newly-invented words get the chance to make their way into a mainstream (主流的) dictionary. If you want to create your own hit words, Angus Stevenson, Oxford Dictionaries head of content development,  suggests that you should not only make sure that they are expressive (有表现力的) and meaningful, but also have an attractive sound so that people will enjoy saying them out loud.

    The park bench was deserted as I sat down to read beneath the branches of an old tree, with good reason to frown, for the world was intended to drag me down. At this time, a boy approached me. He stood right before me, and said with great excitement, "Look what I found!"

    In his hand was a flower, and what a pitiful sight, with its petals(花瓣)all worn. Wanting him to take his flower and go off to play, I faked a small smile and then turned to the other side.

    But instead of leaving, he sat next to my side and placed the flower to his nose and declared, "It really smells pretty and it's beautiful, too. That's why I picked it. Here, it's for you."

    The flower before me was dying or dead. But I knew I must take it, or he might never leave .So I reached for the flower, and replied, Just what I need.

    But instead of placing the flower in my hand, he held it in mid-air. It was then that I noticed that the boy was blind.

    I heard my voice quiver(轻微颤抖) and at the same time my tears shone like the sun. As I thanked him for picking the very best one, he smiled and said, "you're welcome." And then he ran off to play, unaware of the impact he'd had on me.

    I sat there and wondered how he managed to see a self-pitying woman beneath an old tree. Perhaps from his heart, he'd been blessed with true sight.

    Through the eyes of the blind boy, I could see the problem was not with the world; the problem was me. And for all of those times I had been blind. From now on I vowed to see beauty and appreciate every second that's mine. Then I held the flower up to my nose and breathed its fragrance and smiled as that young boy.

    I was in the Sants Cruz Mountains not long ago, speaking and singing at a women's conference. We were focusing on the theme of loving others in practical ways through our gifts, and something in particular happened during one of the sessions（会议）will remain imprinted in memory.

    A young Syrian woman (Lilith) was invited to the conference at the last minute, and everyone seemed surprised and delighted that she'd actually come. Just a few days earlier, Lilith had fled her country and found refuge with one of the women attending the conference. As an Orthodox Christian in Syria, she and her loved ones had become attacked targets of violent terrorist groups in the country's ongoing civil war.

Lilith had witnessed horrors no one of her young age should ever see. Despite the further danger it presented, she'd decided to leave her home and her family to find safety here in America. Knowing some of her story, and seeing her sitting through the sessions at the retreat（畏缩不前）—head, covered in a scarf, bowed toward the floor—broke my heart.

    Lilith's story touched all of us, including Pam, who was quilt maker. Pam had just finished a beautiful quilt, and had brought it with her. She, along with a few of the leaders, decided to give it to Lilith as a symbol of their comfort and love.

During our last session, Lilith was called forward and prayed over, hugged, and wrapped up in that beautiful quilt. I thought of the many hours Pam undoubtedly spent working on it, and the terrible events that led Lilith to this moment—surrounded by the beauty and love quilt embodied. I wept. When they told her it was for her, she wept.