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    When someone reads the right book at the right time in his life, it can have a profound effect. Such is the case for the people on this list, who come from all walks of life. These people have singled out a book that they read which had a life-changing effect on them. They, in turn, affected the worlds of science, technology and politics.

1). That Printer Of Udell's—Ronald Reagan

    One book that had a big effect on former President Ronald Reagan as a child was the Christian-book That Printer of Udell's, by Harold Bell Wright. The main character of the book, Dick Falkner, was born into a broken home with an alcoholic father. After losing both of his parents, Falkner moves to a bigger city, called Boyd City to make a living. However, everyone turns Dick down for a job, except for a printer. At the end of the book, Dick heads to Washington, D. C, to become a politician. It's said that the book showed him that good could defeat evil and that the good guys followed a code of morality, which can be seen as a driving factor in his presidency.

2). A Treatise Of Human Nature—Albert Einstein

    Albert Einstein was one of the greatest minds of all time. His name is synonymous with brilliance. So, what book had the biggest effect on such an important mind? It was A Treatise of Human Nature, by David Hume, which was published in 1738. Hume was a Scottish philosopher known for his contributions to philosophical skepticism(怀疑论). Einstein mentioned a few times that A Treatise of Human Nature had a large influence on him. He read the book just before coming up with his famous special relativity theory. In a letter, Einstein said that Treatise helped him formulate the ideas. It was like he already had the ideas in his brain, and Hume helped him to express them clearly.

3). The Aeneid—Mark Zuckerberg

    When Mark Zuckerberg first added his likes to his Facebook profile, he put the book Ender's Game, by Orson Scott Card, as a favorite book. Later, in an interview with The New Yorker, Zuckerberg clarified that the sci-fi classic was one he enjoyed, but it wasn't his favorite. He said that his favorite book is The Aeneid, by Virgil, a Latin epic poem that was written somewhere between 29 - 19 BC about a group of Trojan survivors. Zuckerberg said he first read the book when he was in high school while he was studying Latin and that one thing that stuck with him was Aeneas's drive to follow his fate to build a city that “knows no boundaries in time and greatness".

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    In business, there's a speed difference: It's the difference between how important a firm's leaders say speed is to their competitive strategy and how fast the company actually moves. The difference is important regardless of industry and company size. Companies fearful of losing their competitive advantage spend much time and money looking for ways to pick up the speed.

In our study of 343 businesses, the companies that chose to go, go, go to try to gain an edge ended up with lower sales and operating incomes than those that paused at key moments to make sure they were on the right track. What's more, the firms that “slowed down to speed up” improved their top and bottom lines, averaging 40% higher sales and 52% higher operating incomes over a three-year period.

    How did they disobey the laws of business physics, taking more time than competitors yet performing better? They thought differently about what “slower” and “faster” mean. Firms sometimes fail to understand the difference between operational speed (moving quickly) and strategic speed (reducing the time it takes to deliver value). Simply increasing the speed of production, for example, may be one way to try to reduce the speed difference. But that often leads to reduced value over time, in the form of lower-quality products and services.

    In our study, higher-companies with strategic speed always made changes when necessary. They became more open to ideas and discussion. They encouraged new ways of thinking. And they allowed time to look back and learn. By contrast, performance suffered at firms that moved fast all the time, paid too much attention to improving efficiency, stuck to tested methods, didn't develop team spirit among their employees, and had little time thinking about changes.

    Strategic speed serves as a kind of leadership. Teams that regularly take time to get things right, rather than plough ahead full bore, are more successful in meeting their business goals. That kind of strategy must come from the top.

Best Inventions

    Sun Power

    People who buy solar panels (嵌板）for their home hope to help the environment and save some money. But they end up with large metal boxes on their roof. Tesla, a car company, solved the problem. The solution is the Solar Roof. It is a series of tiles (瓦) made to look like traditional roofing material while using the power of the sun. Tesla developed it with SolarCity, a longtime provider of solar panels. It is now available to the public.

    Talking Tech

    Echo gives users the ability to talk to their tech. Apple's Siri and Microsoft's Cortana do that too. But in many ways，Amazon's version，Alexa, which is built into Echo，is more powerful. Alexa has grown since it was put on the market in 2014, and today, you can use it to turn on the lights, order a pizza, and more. Echo costs $ 180. Amazon recently developed a junior version, the $ 50 Echo Dot.

    Spin and Roll

    Goodyear is reinventing the wheel. It introduced its Eagle 360 spherical tire (球形轮胎) in March, 2016. The tires allow cars to move in many directions, including sideways, and at angles to handle slippery surfaces. The key is magnetic levitation (磁悬浮). Tires are fixed to cars, but Eagle 360s float beneath them. They're meant for self-driving cars of tomorrow.

    Cycle Safety

    Jeff Woolf had a serious bike crash. If he hadn't been wearing his helmet, he would have been badly hurt. He wondered why so many riders didn't wear helmets. That turns out it was mostly because helmets were big and hard to carry around. Woolf, an engineer, came up with Morpher. The helmet is made from interwoven plastics (交错编织的塑料). It is strong, but it's also flexible enough to fold almost totally flat. That makes it easy to carry. Morpher is priced at $ 119.

    Last week I was riding my special motorbike and then stopped at a convenience store. As I was getting my wheelchair off the back, a man watched me from his car and I noticed a wheelchair in his back seat. We spoke for a moment and I asked him about the wheelchair. He answered that it was for his daughter. "Well, do you think she would like to go for a ride on my motorbike with me?" I asked. He seemed shocked that a total stranger would ask him this. He thought about it for a second and said, "OK, as long as I can follow you."

    He introduced me to Amy and he sat her on my back seat. Her father followed me for a few miles and she talked non-stop about what she wanted for Christmas. As we came back to the convenience store, she said, "This ride is the best Christmas present I could ever receive. I have been in a wheelchair my whole life and didn't know I could do this." I told her about some of the other things I do (ski, travel the world by myself, etc.). As her father was taking her off my bike, she turned to him and said, "Oh Daddy, I'm going to be OK. Mr. Bryant does all kinds of things, and I will too." Her father turned away as a tear of joy rolled down his cheek. He hugged me and said, "I was sitting here praying for a gift for Amy that would encourage her. She often felt that her life was dull compared to other children. God answered my prayer just now. Now I pray that God will bless you for your gift to Amy today." I believed what he said. Being kind and thoughtful to others, we can be an answer to prayer.

    When first entered, Vanak Restaurant does not look like much of a restaurant, but once the pleasant smells of kabob (烤肉串) hit the senses, you are incapable of calling it anything less.

    Owned by a local couple, this Persian restaurant has an inviting, homelike atmosphere that many restaurants lack.

    The space is small with only a few dining tables and nearly no decoration, but the environment is truly charming.

    Lying in a hardly noticeable street corner, the restaurant still attracts all customers, especially those experienced in the delights of Middle Eastern cooking.

    A common sight is that of old Persian men sitting in the corner talking loudly about world topics, watching news events on TV, drinking a black tea known as Persian chai, and reading local Persian newspapers all the while trying to finish off their plates piled with food.

    The variety of food at the restaurant is limited, but the amount of each dish is fairly large. Most of the meals can serve two people and are under $10, so not only is it affordable but practical as well.

    The food especially appeals to health-conscious eaters because each dish is very healthy, made with limited fat and oil and served straight off the grill (烤肉架).

    The main dish that the restaurant is popular for is its kabobs, which are different styles of grilled meat.

    One delicious and extremely healthy dish is the Joojeh Kabob, which is made of grilled chicken pieces served with either rice or bread. Another great kabob is the Chelo Kabob, a kabob consisting of grilled beef.

    Although the restaurant is small, the atmosphere and the food is delicious. It is a place that should not be overlooked.

    In this Pennsylvania city, Pittsburgh is shrinking but getting wealthier. Since 2000, its population has declined by 95,000 while its income per capita (人均) has shot up 24 percent. The trend is taking hold in many other cities, like Buffalo in New York, Providence in Rhode Island and New Orleans.

    Some of these areas have created more high-paying jobs in energy, health care or education. Others have managed to reshape their producing industry for a new economy. Higher-paying jobs have a greater effect because they create demand for additional services. "The story in Pittsburgh is very positive, and other areas are looking at it as an example of the transformation that might be possible,” said Guhan Venkatu, who wrote an economic history of the area called “Rust and Renewal” for the Federal Reserve Bank of Cleveland.

    Carnegie Mellon University and the University of Pittsburgh have helped bring tech jobs and innovation(革新) to the area by sponsoring tech centers that help graduates start companies without moving to Silicon Valley or San Francisco. This has helped keep Pittsburgh's educated young population growing even as the entire population in the city has dropped.

    Pittsburgh has more STEM (science, technology, engineering and math) jobs than other shrinking cities, about 80, 000 or 7% of all jobs. STEM jobs add productivity and income growth to the area. Manufacturers of high-tech medical equipment in the Pittsburgh area also have doubled employment in the last 10 years.

    However, some experts question whether growing income per capita can really make up for a declining population. According to Patrick Adler, a researcher at the University of Toronto, population loss does matter if it means lower-skilled workers have fled because of a lack of opportunity. What's more, high-paying jobs in education and health care can disappear if the population declines too greatly. So it'd be wise to find ways to increase the population.