Fear and its companion pain are two of the most useful things that man and animals possess if they are used. If fire didn't hurt when it burned, children would play with it until their hands were burned away. Similarly, if pain existed but fear didn't, a child could burn itself again and again because fear would not warn it to keep away from the fire that had burnt it before. A really fearless soldier--and some do exist--is not a good soldier because he is soon killed; and a dead soldier is of no use to his army. Fear and pain are therefore two guards without which man and animals might soon die out.

    In our first sentence we suggested that fear ought to be properly used. If, for example, you never go out of your house because of the danger of being knocked down and killed in the street by a car, you are letting fear rule you too much. The important thing is not to let fear rule you, but instead, to use fear as your servant and guide. Fear will warn you of dangers; then you have to decide what action to take.

    In many cases, you can take quick and successful action to avoid the danger. For example, you see a car coming straight towards you; fear warns you, you jump out of the way, and all is well.

    In some cases, however, you decide that there is nothing that you can do to avoid the danger. For example, you cannot prevent an airplane crashing into your house, and you may not want to go and live in a desert where there are no airplanes. In this case, fear has given you its warning, you have examined it and decided on your course of action, so fear of the particular danger is no longer of any use to you, and you have to try to overcome it.

    Mr. and Mrs. Gordon were sitting on the sand, reading their magazines. Mr. Gordon was too stingy (吝啬的) to rent (租) a chair. Their twelve-year-old daughter, Sandra, was playing at the water's edge. Suddenly a huge wave lifted Sandra up and carried her out to sea. Fortunately, a lifeguard (救生员) was on duty and he saw the wave carry Sandra away. He ran along the beach and dived into the sea. He swam quickly to where the girl was, with her head only just above the water, was shouting for help. She was very frightened. When the lifeguard reached her, she struggled with him, as drowning people often did. However, he was a skillful lifeguard and quickly took hold of her and swam with her back to the beach. By the time he reached it, Mr. and Mrs. Gordon had realized what had happened. They had run down to the water's edge. Neither of them could swim. They just stood in the shallow water, and worried about their daughter. Had the lifeguard reached her in time? Fortunately, he had. “That was quick work, young man,” Mr. Gordon said. He turned to his wife, “Give the lifeguard a dollar.” “A dollar!” Sandra cried. “Dad, how can you give him a dollar! He saved my life. I was half dead.” “Quite right, girl,”Mr. Gordon said, pleased by his daughter's awareness of the value of money. He turned to his wife again and said, “She's right. She was only half dead. Give him fifty cents.”

    Teenagers who spend hours in front of the television may have a poorer diet as young adults.

    A study, which included nearly 1,400 high school students, found those who watched TV for five hours or more per day had less healthy diets than peers(同龄人）five years later. Why does this happen? Should the parents take any measures?

    On the one hand, people who spend a lot of time in front of the TV, especially teenagers, may snack more, and that may affect their long-term diet quality.

    On the other hand, TV ads for fast food, sweets and snacks tempt teenagers to eat more of those foods. And TV time might also replace exercise time for some kids.

Lead researcher Dr. Daheia J. Barr-Anderson, of the University of Minnesota in Minneapolis, told Reuters Health a clear correlation between TV time during high school and diet quality in young adulthood. While the heaviest TV viewers were eating the most junk food , those who'd watched less than two hours per day had the highest intake(吸收)of fruits, vegetables, whole grains and high-calcium food. In her opinion, parents should limit and monitor TV viewing.

    As far as I am concerned, children should watch no more than two hours of television per day. And parents should set a good example by eating right, being physically active and curbing their own TV time.

    As we drove along, my spirits went up again, and I turned, with pleasure, to the thought of the new life which I was entering. But though it was not far past the middle of September, the heavy clouds and strong north-easterly wind combined to make the day extremely cold; and the journey seemed a very long one, so that it was nearly one o'clock before we reached the place of our destination. Yet when we entered the gateway, my heart failed me, and I wished it were a mile or two farther off. For the first time in my life I must stand alone: there was no retreating now. I must enter that house, and introduce myself among its strange people. But how was it to be done? True, I was near nineteen; but, thanks to the protecting care of my mother and sister, I well knew that many a girl of fifteen, or under, was gifted with a more womanly address, and greater ease and self-possession, than I was. Yet, anyway. I would do very well, after all; and the children, of course, I should soon be at ease with them.

    "Be calm, be calm, whatever happens," I said within myself; and truly I was so fully occupied in steadying my nerves and keeping down the rebellious beat of my heart that when I was admitted into the hall and into the presence of Mrs. Bloomfield, I almost forgot to answer her polite greeting; and it afterwards struck me that the little I did say was spoken in the tone of one half-dead or half-asleep.

    With due politeness, however, she showed me my bedroom, and left me there to take a little refreshment for a little while and led me into the dining-room. Some beefsteaks and potatoes were set before me; and while I dined upon these, she sat opposite, watching me (as I thought) and trying to keep something like a conversation— consisting chiefly of commonplace remarks. In fact, my attention was almost wholly absorbed in my dinner: not from appetite, but from the toughness of the beefsteaks, and the numbness of my hands.

    “I have had so little time to attend to their education myself, but I think they are clever children, and very willing to learn, especially the little boy; he is, I think, the flower of the flock— a generous, noble-spirited boy, one to be led, but not driven, and remarkable for always speaking the truth.” “His sister Mary Ann will require watching,” continued she, “but she is a very good girl on the whole, though I wish her to be kept out of the nursery as much as possible, as she is now almost six years old, and might acquire bad habits from the nurses. I have ordered her bed to be placed in your room, and if you will be so kind as to look after her washing and dressing, and take charge of her clothes, she needs to have nothing further to do with the nursery maid.”

    I replied I was quite willing to do so; and at that moment the children entered the room. Tom Bloomfield was a well-grown boy of seven. Mary was a tall girl, for her age of six, somewhat dark like her mother. The second sister was Fanny, a very pretty little girl, looking little younger than Mary. The remaining one was Harriet, a little broad, fat, merry, playful thing of scarcely two, whom I had more desire for than all the rest — but with her I had nothing to do.

Training the Brain

    People who can accomplish unbelievable tasks, such as memorizing thousands of random numbers in under an hour, state that they just have normal brains. Some memory superstars compete in Olympic-like World Memory Championships. These mental athletes, or MAs for short, can memorize names of dozens of strangers in a few minutes or any poem handed them. Ed Cooke, a 24-year-old MA, explains they see themselves as participants rescuing the long-lost art of memory training. These techniques existed not to recall useless information, but to cut into the brain basic text and ideas.

    A study in the journal Nature examined eight people who finished near the top of the World Memory Championships. The scientists examined whether their brains were fundamentally different from everyone else's or whether they were simply making better use of memorizing abilities we all possess. They put the MAs and control subjects into brain scanners and had them memorize numbers and photographs. The result surprised everyone. The brains of the MAs and those of the control subjects were indistinguishable. On every test, the MAs scored in the normal range. However, when the scientists examined what part of the brain was used during a memory activity, they found the MAs relied more heavily on areas in the brain involved in spatial memory.

    MAs offer an explanation: anything can be fixed upon our memories and kept in order by constructing a building in the imagination and filling it with pictures of what needs to be recalled. Dating back to the fifth century, the building is called a memory palace. Even as late as the fourteenth century, when there were copies of any text, scholars needed to remember what was read to them. Reading to remember requires a different technique than speed reading. If something is made memorable, it has to be repeated. Until relatively recently, people read only a few books intensively (细致地) again and again, usually aloud. Today we read extensively, usually only once and without continuous focus.

    So the great difference is the ability to create impressive pictures in mind and to do it quickly. Using memory palaces, MAs create memorized pictures. For example, recombine the pictures to form unforgettable scenes such as the ways through a town. One competitor used his own body parts to help him memorize a 57,000-word dictionary.

    Anyone who wishes to train the mind needs first to create fantastical palaces in the imagination. Then they should cut each building into cubbyholes for memories. In a short amount of time, they will notice improvement with remembering things. To keep the skill sharp, MAs deliberately empty their palaces after competitions, so they can reuse them and they recommend that beginners do the same.

Dear Mr. Whitacre,

I fell in love with a "flying Dutchman"…literally. In the summer of 2011, I moved to the Netherlands not knowing anyone except my husband, not knowing how to speak the language, and leaving behind my friends, family, and everything I knew that represented me. But as they say, "Love is blind."

In the beginning, I spent many months "alone in my head." My mother-in-law didn't speak English (or Italian). This, however, didn't stop her from trying to communicate with me. At first, sounds of vague meanings coupled with hand gestures was our way of having a conversation.

It wasn't until I discovered she was a choral (合唱的) director for a women's group in the community that we then began communicating on a whole different level. From my early days in school, I was always part of a school choir for over a decade.

We shared a love of music! Dien (my mother-in-law's name) taught me many beautiful Dutch songs. I sang in her choir throughout the years that followed. And then by chance, I came across a TED-Talk featuring you, Mr. Whitacre discussing your music and the virtual (虚拟合唱团) choir. Within minutes, I researched when the next project would start and to my surprise, it was Virtual Choir4" Fly To Paradise." I couldn't wait to tell my mother-in-law!

The next 2 weeks we spent practicing our parts and perfecting our video submissions. It was pure joy for us. Something we shared a love for, encouraging each other, spending hours together, and making a permanent bond as a mother and daughter-in-law.

Music has always been a part of my life. Its significance is greater than anything most people are aware of. Our participation in your virtual choir is one I will never forget. And it goes without saying, I am grateful for you, your music, and its ability to connect us all.