While watching the Olympics the other night, I came across an unbelievable sight. It was not a gold medal, or a world record broken, but a show of courage.

    The event was swimming and started with only three men on the blocks. For one reason or another, two of them false started, so they were disqualified. That left only one to complete. It would have been difficult enough, not having anyone to race against, even though the time on the clock is important.

    I watched the man dive off the block and knew right away that something was wrong. I'm not an expert swimmer, but I can tell a good dive from a poor one, and this was not exactly medal quality. When he resurfaced, it was evident that the man was not out for gold—his arms were waving in an attempt at freestyle. The crowd started to laugh. Clearly this man was not a medal competitor.

    I listened to the crowd begin to laugh at this poor man who was clearly having a hard time. Finally he made his turn to start back. It was pitiful. He made a few desperate strokes and you could tell he was worn out.

    But in those few awful strokes, the crowd had changed.

    No longer were they laughing, but beginning to cheer. Some even began to stand and shout “Come on, you can do it!” and he did.

    A clear minute past the average swimmer, this young man finally finished his race. The crowd went wild. You would have thought that he had won the gold, and should have. Even though he recorded one of the slowest times in Olympic history, this man gave more heart than any of the other competitors.

    Just a short year ago, he had never even swum, let alone race. His country had been invited to Sydney.

    In a competition where athletes remove their silver medals feeling they have somehow been cheated out of gold, or when they act so proudly in front of their competitors, it is nice to watch an underdog.

    Our warming planet is expected to face serious water crisis（危机）in the coming decades — which means each nation's natural resource will be more important than ever.

    My teacher, Mr. August J. Bachmann, was the most influential teacher I ever had.

    I had gotten into trouble in his class: Another student had pushed me for fun, and I became angry and began to hit him. Mr. Bachmann stopped the fight, but instead of sending me to the office, he sat me down and asked a simple question,“Penna, why are you wasting your life？ Why aren't you going to college？”

    I didn't know anything about colleges or scholarships. No one had ever considered that a fatherless boy from the poorest neighborhood had a future. That day, instead of rushing off for lunch, he stayed and explained possible education options to me. At the end of our talk, he sent me to see a secretary who had a child at a state college. This was in 1962 at Emerson High School in Union City, New Jersey.

    Well, 55 years have passed, and what have I done with the knowledge he gave me？I gained a PhD from Fordham University when I was only 29.I taught English and social studies and then moved up the chain of command from teacher to principal(校长).

    I've sat on the board for Magnet Schools of America and represented that organization at the United Nations. I've won a number of great educational awards. But where would I be if a truly caring teacher had not taken the time out of his lunch period to speak to me？ It was without question only his confidence in me that helped me forward.

    I have repaid his kindness hundreds of times by encouraging misguided youngsters to aim higher. If I have saved any children, it is because of him. If I have been a successful educator, it is because I had a great role model in Mr. Bachmann.

    For centuries, dolphins have got our admiration, and it is easy to see why. They are beautiful, cute and smart sea animals. Dolphins are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this way, they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. It is said that dolphins are the world's second brightest creatures after humans and have many brain features related to intelligence. Their brain is nearly the same size as our own, and they live a long time at least twenty or thirty years.

    Like some animals, dolphins use sound to help them find their way around. They also make these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw.

    Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people.

    There is a story about sailors in the 19th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to 1903, Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called The Penguin shot and wounded Jack. He recovered and for nine years more continued to guide all ships through the area－except for The Penguin.

    Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them.

    It's apparently become a trend in schools around the world to ban students from using the term, “best friends,” according to psychologist Dr. Barbara Greenberg. The movement, which is believed to have started in Prince George's school in South London, isn't intended to discourage close friendships, but rather encourage a wider friend group, Greenberg says.

    “Let's face it. You can't ban somebody from having a close relationship, and you can't really ban somebody from having a best friend but what the schools are trying to do is foster the idea of kids having more than a single friend,” Greenberg said.

    The idea is to increase the number of interactions a student may have with different members of his or her peer group. “I see kids come in all week long who are feeling awful because they are either nobody's best friend or their best friend has moved on,” Greenberg says.

    Jay Jacobs, who operates Timber Lake Camp in New York, stresses the downside of not fostering multiple relationships at a young age, for exactly that reason. “I think that there are problems in just having one friend,” Jacobs says. “Remember as you grow up, interests change, and children go in different directions.” Jacobs adds that teachers at Timber Lake, which changes positions between Glen Cove in winter and Shandake in summer, have made it a point to promote a more inclusive environment for years.

    Jacobs reminds people that, “As you grow up, interests change, and children go in different directions,” so having only one friend can be risky. He holds the belief that children will be better set up for success later in life if they get used to having a wider friend group at a young age. “It's about promoting kindness, looking to children to be kind to one another and to be aware of what it looks like when you're not,” Jacobs says.

Fans of art believe that its main purpose is to make us look at life from many different angles. When it comes to Cubism(立体主义), however, the artists of this era wanted us to look at life from every angle. 

The father of Cubism, Spanish artist Pablo Picasso, is among the art world's most famous names. Like many other great names before him, he felt restrained by the rules of his teachers and decided to do something: break them. 

Early in his painting career, Picasso realized something important about how people view and remember scenes of beauty. When we look at a subject, we don't just see it from one angle, as many paintings appear. Instead, we study the subject from a number of different angles, heights and viewpoints. This is the aim of Cubism: It portrays(描绘) subjects from a wide range of angles; it doesn't force us to see things as the artist viewed them at the time he or she painted them. To bring his visions to life, Picasso and other Cubists took the most basic components of a subject and rearranged them in a way which let us see it in full detail. 

"By breaking objects and figures down into distinct areas, Picasso aimed to show different viewpoints at the same time and within the same space," in the words of the Tate Institution. Or as Lithuanian—born Cubist Jacques Lipchitz once put it: "Cubism is like standing at a certain point on a mountain and looking around. If you go higher, things will look different; if you go lower, again they will look different."

Cubism stood out as it was an art movement which didn't just rely on the artist to share their vision by painting what they saw. As cubist paintings mainly show their subjects in a deconstructed form, this means that viewers must use their imaginations to find the missing pieces for themselves. As Guardian art critic Johnathan Jones noted, this is part of the beauty of enjoying Picasso's works. "If you can relax your gaze(凝视)enough and just enjoy the painting long enough, something really amazing happens. Your mind produces a solid feeling of the things Picasso was looking at. the world is revealed in its majesty(壮观)," he wrote.