Persuasion is the art of convincing someone to agree with you. According to the ancient Greeks, there are three basic tools of persuasion : ethos, pathos, and logos.

    Ethos is a speaker's way of convincing the audience that she is trustworthy, honest and reliable. One common way a speaker can develop ethos is by explaining how much experience or education she has in the field. After all, you're more likely to listen to advise about how to take care of your teeth from a dentist than a fireman. A speaker can also create ethos by convincing the audience that she is a good person. If an audience cannot trust you, you will not be able to persuade them.

    Pathos is a speaker's way of connecting with an audience's emotions. For example, a politician who is trying to convince an audience to vote for him might say that he alone can save the country from a terrible war. These words are intended to fill the audience with fear, thus making them support him. Similarly, an animal charity might show an audience pictures of injured dogs and cats, to make the viewers feel pity. If the audience feels bad for the animals, they will be more likely to donate money.

    Logos is the use of facts, statistics, or other evidence to support your argument. An audience will be more likely to believe you if you have convincing data to back up your claims. Presenting this evidence is much more persuasive than simply saying “believe me”.

    Although ethos, pathos, and logos all have their strengths, they are often most effective when used together. Indeed, most speakers use a combination of ethos, pathos, and logos to persuade their audiences. So, the next time you listen to a speech, watch a commercial, or listen to a friend try to convince you to lend him some money, be on the lookout for these ancient Greek tools of persuasion.

    My daughter Kelly is a cautious person. She needs to warm up to situations, and is hesitant(犹豫的) to try new things. When with close friends, she becomes a leader who laughs loudly and chants. But when that comfort zone is not around her, she is shy and nervous.

    This has been challenging for me at times. “Shy” is not a word that I think has ever been used to describe me. But this has been a year of firsts for my girl that has filled her with a new sense of confidence. This year she moved to lap lane (习泳区） in swimming where she was preparing for a swim team. This year she learned to ride a bike without training wheels. And this year she completed her first kids' triathlon (三项全能).

    On Saturday, with a thunderstorm coming soon and my son's birthday party later in the day, we all went out in the dark of the morning for Kelly to participate in her first triathlon. We practiced transitions from swim to bike to run with her, we got all the equipment she'd need, and we kept talking about the race. But as we waited the two hours for the older kids to finish before her turn, she held my leg a little harder and told me she loved me a few too many times. She was nervous but trying to keep it together.

    And then it was her turn. From the second she jumped into the water, my heart soared. My daughter transformed into the most confident human being I had ever seen. She dominated （主宰） that swim, crushed that bike ride and ran to the finish with the biggest smile on her face.

    I can honestly say that I never felt so proud of someone in my entire life. It wasn't because she did a sport or anything like that. It was because she was afraid of something and conquered that fear with confidence and a fire I hadn't seen before.

    All day I would find myself just looking over at her and smiling. She might be wearing the finalist medal but I felt like I won that day. I won the chance to see my girl shine.

    Shine on, sweet baby.

    Driving could soon be a far more pleasant experience thanks to a personal in-car robot being developed by researchers. The robot, which is called “Affective Intelligent Driving Agent (AIDA)” will be able to tell you the best route home based on traffic reports, remind you to pick up petrol and suggest places you may like to visit. The robot, which sits on the dashboard, is being developed at the Massachusetts Institute of Technology (MIT) in collaboration with Volkswagen.

    AIDA communicates with the driver through an expressive robot screen and will even appear sympathetic if you're having a bad day. Cynthia Breazeal, director of MIT's Personal Robots Group, said: “We are developing AIDA to read the driver's mood from facial expression and other cues and respond in a proper way.”

    AIDA works by analyzing the driver's mobility patterns, keeping track of common routes and destinations. The creators say the robot should be able to work out home and work locations within a week of driving. Soon afterwards, the system will direct the driver to their preferred supermarket, suggesting a route that avoids traffic-clogged roads. AIDA might recommend a petrol stop en route if the fuel tank is nearly empty. The robot will also incorporate real-time information about traffic jams, the weather report, commercial activity, tourist attractions, and residential areas.

    “In developing AIDA we asked ourselves how we could design a system that would offer the same kind of guidance as an informed and friendly companion.”

    “AIDA can also give you feedback on your driving, helping you achieve more energy efficiency and safer behavior,” Assaf Biderman from SENSEable City Lab added.

    On a stormy day last August, Tim heard some shouting. Looking out to the sea carefully, he saw a couple of kids in a rowboat were being pulled out to sea.

Two 12-year-old boys, Christian and Jack, rowed out a boat to search a football. Once they'd rowed beyond the calm waters, a beach umbrella tied to the boat caught the wind and pulled the boat into open water. The pair panicked and tried to row back to shore. But they were no match foritand the boat was out of control.

    Tim knew it would soon be swallowed by the waves.

“Everything went quiet in my head,” Tim recalls（回忆）. “I'm trying to figure out how to swim to the boys in a straight line.”

    Tim took off his clothes and jumped into the water. Every 500 yards or so, he raised his head to judge his progress. “At one point, I considered turning back,” he says. “I wondered if I was putting my life at risk.” After 30 minutes of struggling, he was close enough to yell to the boys, “Take down the umbrella!”

    Christian made much effort to take down the umbrella. Then Tim was able to catch up and climb aboard the boat. He took over rowing, but the waves were almost too strong for him.

“Let's aim for the pier（码头）,” Jack said. Tim turned the boat toward it. Soon afterward, waves crashed over the boat, and it began to sink. “Can you guys swim?” he cried. “A little bit,” the boys said.

Once they were in the water, Tim decided it would be safer and faster for him to pull the boys toward the pier. Christian and Jack were wearing life jackets and floated on their backs. Tim swam toward land as water washed over the boys' faces.

    “Are we almost there?” they asked again and again. “Yes,” Tim told them each time.

    After 30 minutes, they reached the pier.

    I stopped to watch my little girl busy playing in her room. In one hand was a plastic phone ; in the other a toy. I listened as she was speaking to her make-believe little friend and I'll never forget the words she said, even though it was imagined.

    She said, "Suzie's in the corner because she's not been very good. She didn't listen to a word I said or do the things she should." In the corner I saw her baby doll well dressed. It was obvious that she'd been put there to sit alone and think.

    My daughter continued her "conversation", as I sat down on the floor. She said, "I'm all fed up and I just don't know what to do with her any more. She cries whenever I have to work and wants to play games too. She tries to help me with the dishes, but her arms just cannot reach... And she doesn't know how to fold towels. I don't have the time to teach. I have a lot of work to do and a big house to keep clean. I don't have the time to sit and play - don't you know what I mean?"

    And that day I thought a lot about making some changes in my life, after listening to her innocent words which cut me like a knife. I hadn't been paying enough attention to what I hold most dear. I'd been caught up in responsibilities that increased throughout the years.

    But now my attitude has changed because in my heart I realize that I've seen the world in a different light through my little darling's eyes. So let the cobwebs(蜘蛛网) cut the corners and the dust bunny rabbit rule the floor. I'm not going to worry about keeping up with them anymore.

    I'm going to fill the house with memories of a child and her mother, for we have only one childhood and we will never get another.