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    A man in Pakistan is now working to help children get an education. When he was a child, he did not go to school because he was too poor.

    It is reported that Pakistan has 25 million children who do not go to school. That is the second­highest number in the world. Only Nigeria has more. Many Pakistani children must work to support their families.

    Mohammad Ayub was once one of those children. He is now a firefighter. He also manages a small school. VOA recently visited the school in the capital Islamabad.

    Ayub started with just one student in 1982. He saw a boy cleaning cars for days. He asked him, "Why don't you go to school?" The boy answered that his parents were dead and he had to work to help support his five brothers and three sisters.

    Ayub was also an orphan and he, too, had to work to help support his five brothers and three sisters. He said, "When my father died, everyone who came to the funeral said they were sorry, but no one helped." He sold newspapers and did other work to earn enough money to pay school fees for his brothers and sisters.

    Ayub wanted to help the young boy who washed cars, but he did not have enough money to pay the boy's school fees.

    Today, Ayub teaches many children at his school in a public park. Some of the children attend other schools in the morning, but come to Ayub in the afternoon to get help with their homework.

    Ayub has helped a large number of poor children since he began teaching. Many of them come from very poor areas near the park.

    Ayub said," I used to argue with kids who worked ' Why are you washing someone's dishes or their clothes? Why don't you study? ' "

    One of the children he advised to attend classes was Farhat Abbas. Ayub found him working with his friends about 12 years ago. "He followed us back home. He told our parents he wanted to teach us and asked them to send us to his school, "Abbas said.

    Today, Abbas is taking classes at a college and is helping Ayub.

    Many children are out of school, and those who do attend classes often get a poor education. Information gathered by an organization shows half of all Pakistani children in the 5th grade do not understand basic mathematics and cannot read a story in their language.

    A group in Islamabad reports Pakistan spends less on education than any other country in South Asia.

    Many people thought that U.S. President Calvin Coolidge always lived in the White House. However, he sometimes lived in the nearby Willard Hotel.

    Once, in the middle of a night, the President woke up to see a thief searching his clothes. Coolidge calmly spoke up from the darkness, “I wish you wouldn't take that watch.”

    “Why?” asked the shocked man.

    Coolidged answered, “Take it near the window and read what is engraved（雕刻） on the back of it.”

    The man read, “Presented to Calvin Coolidged, Speaker of the House, by the Massachusetts General Court.” He was very surprised!

    “Are you President Coolidge?” he asked. He had never thought he would find the president sleeping in a hotel!

    “Yes, I am.” Coolidge said. Then he asked, “Why are you doing this, Son?”

    The young man explained that he and two friends traveled to Washington during their college vacation. They spent all of their money and had no money to pay the hotel bill and the train tickets back to school.

    Coolidge added up the cost. It came to $32. That may not sound like much now, but it was a big number then. “I'll give you the $32 as a loan(借款）,” the President said, “And I expect you to pay me back.”

    The young man thanked him. Coolidge left him with this warning: “Son, you are a nice boy, you are better than you are acting. You are starting down the wrong road. Just remember who you are.”

    It wasn't until after the death of Mr. Coolidge that this story was allowed to come out. It was first published in the newspaper Los Angeles Times. And the most interesting of all is that the President's notes show that the young man was indeed better than he was acting. He repaid the $32 loan in full.

    There are three brothers in the pop group "The Bright Shiners"：Harold Fisher, Roger Fisher and Dove Fisher. Harold is the boy who formed the group a year ago and he is the leader now. He plays the piano. Roger plays the lead guitar and Dove is the drummer. Then there is Pete Lennox, their cousin. He is the only member of the group who has had much experience. He played the guitar and sang with "The Tower of London" for three years. Alex Clark and Clive Hicks play the trumpet(喇叭). Robert Lester is the boy who has helped the group most. He was born in Chile and he can play five different Andean instruments. Geoffrey Baker plays the harp(竖琴). Bill Blake isn't a musician, but he is an important member of the group. He looks after their electronic equipment.

    Everyone faces challenges in their life, but some are more important than others. Daniel Kish had serious problems with his eyes when he was born. And doctors took away both of his eyes before he was fourteen months old.

    Soon after, however, he started to do an amazing thing. He started to make clicking(咔嗒) sounds with his tongue(舌头) to help him move around. Much like a bat(蝙蝠), he now moves about using sonar(声呐). He is so good at it that he can ride a bicycle in traffic. He and his group, World Access for the Blind, teach others how to use sonar. In this interview with National Geographic, Kish explains how the process works.

    How does sonar work?

    "When I make a clicking sound, it makes sound waves. These waves reflect(反射) off surfaces all around and return to my ears. My brain then processes the sounds into images(图像). It's like having a conversation with the environment

    When you click, what do you see in your mind?

    "Each click is like a camera flash. I make a 3D image of the things around me for hundreds of feet in every direction

    What is it like riding a bike using sonar?

    "It's exciting and enjoyable but requires a lot of focus. I click up to two times per second, much more than I usually do."

    Is it dangerous to move around the world in this way?

"Much of the world lives in fear of things that we mostly imagine. I have a habit of climbing anything and everything, but I never broke a bone (骨头) as a kid."

    How challenging is it to teach people to use sonar?

    "Many students are surprised how quickly results come. Seeing isn't in the eyes, it's in the mind."