I look back sometimes at the person I was before I rediscovered my old professor. I want to talk to that person. I want to tell him what to look out for, what mistakes to avoid. I want to tell him to be more open, to ignore the temptation of advertised values, to pay attention when your loved ones are speaking, as if it were the last time you might hear them.

    Mostly I want to tell that person to get on an airplane and visit a gentle old man in West Newton, Massachusetts, sooner rather than later, before that old man gets sick and loses his ability to dance.

    I know I cannot do this. None of us can undo what we've done, or relive a life already recorded. But if Professor Morrie Schwartz taught me anything at all, it was this: there is no such thing as “too late” in life. He was changing until the day he said good-bye.

    Not long after Morrie's death, I reached my brother in Spain. We had a long talk. I told him I respected his distance, and that all I wanted was to be in touch—in the present, not just the past—to hold him in my life as much as he could let me.

    “You're my only brother,” I said. “I don't want to lose you. I love you.”

    I had never said such a thing to him before. A few days later, I received a message on my fax machine. It was typed in the sprawling, poorly punctuated, all-cap-letters fashion that always characterized my brother's words.

    “HI I'VE JOINED THE NINETIES!” it began. He wrote a few little stories, what he'd been doing that week, a couple of jokes. At the end, he signed off this way:

I HAVE HEARTBURN AND DIAHREA(腹泻) AT THE MOMENT—LIFE'S A BITCH. CHAT LATER?

[signed] SORE TUSH.

I laughed until there were tears in my eyes.

    This book was largely Morrie's idea. He called it our “final thesis.” Like the best of work projects, it brought us closer together, and Morrie was delighted when several publishers expressed interest, even though he died before meeting any of them. The advance money helped pay Morrie's enormous medical bills, and for that we were both grateful.

    The title, by the way, we came up with one day in Morrie's office. He liked naming things. He had several ideas. But when I said, “How about Tuesdays with Morrie?” he smiled in an almost blushing way, and I knew that was it.

    After Morrie died, I went through boxes of old college material. And I discovered a final paper I had written for one of his classes. It was twenty years old now. On the front page were my penciled comments scribbled to Morrie, and beneath them were his comments scribbled back.

    Mine began, “Dear Coach . . .”

    His began, “Dear Player . . .”

    For some reason, each time I read that, I miss him more.

    Have you ever really had a teacher? One who saw you as a raw but precious thing, a jewel that, with wisdom, could be polished to a proud shine? If you are lucky enough to find your way to such teachers, you will always find your way back. Sometimes it is only in your head. Sometimes it is right alongside their beds.

    The last class of my old professor's life took place once a week, in his home, by a window in his study where he could watch a small hibiscus(木槿) plant shed its pink flowers. The class met on Tuesdays. No books were required. The subject was the meaning of life. It was taught from experience.

    The teaching goes on.

    The National Gallery

    Description:

    The National Gallery is the British national art museum built on the north side of Trafalgar in London. It houses a diverse collection of more than 2,300 examples of European art ranging from 13th-century religious paintings to more modern ones by Renoir and Van Gogh. The older collections of the gallery are reached through the main entrance while the more modern works in the East Wing are most easily reached from Trafalgar Square by a ground floor entrance.

    Layout:

    The modern Sainsbury Wing on the western side of the building houses 13th-to15th-century paintings, and artists include Duccio, Uccello, Van Eyck, Lippi, Mantegna, Botticelli and Memling.

    The main West Wing houses 16th-century paintings and artists include Leonardo da Vinci, Cranach, Michelangelo, Raphael, Bruegel, Bronzino, Titian and Veronese.

    The North Wing houses 17th-century paintings and artists include Caravaggio, Rubens, Poussin, Van Dyck, Velazquez, Claude and Vermeer.

    The East Wing houses 18th-to early 20th-century paintings, and artists include Canaletto, Goya, Turner, Constable, Renoir and Van Gogh.

    Opening Hours:

    The Gallery is open every day from 10am to 6pm（Fridays 10am to 9pm）and is free, but charges apply to some special exhibitions.

    Getting There:

    Nearest underground stations: Charing Cross (2-minute walk). Leicester Square (3-minute walk), Embankment (7-minute walk), and Piccadilly Circus (8-minute walk).

    Certain activities can be good or bad for our brains, so let's see which of the seven habits you should carry on doing or give up.

    For the first time, China's South Pole researchers can eat fresh vegetables grown regularly, according to Wang Zheng, the grower, who came home last month after a 400-day mission in Antarctica.

    "Growing vegetables in Antarctica reminded me of The Martian, a sci-fi movie about an astronaut who survives alone on Mars by eating potatoes he grows there," Wang said on Friday. "I totally understand the main character of the movie, I understand how he feels when he watches a small green plant grow in a fragile man-made environment,'' said the 40-year-old doctor. But he admitted that the conditions he faced in the Antarctic were much better than those in the film.

    Wang said the growth chamber(生长室) at the Zhongshan Station, had only a low yield when it was established in 2013. The amount was too small to make it possible for researchers to have vegetable dishes. To increase the yield, he reduced the number of vegetable varieties and focused on only some fast-growing ones, which makes the output stable. As a result, during much of his stay there, at least one vegetable dish, such as cucumbers, lettuce or cabbage, was served at every meal for a group of 18 researchers.

    Wang, an orthopedist, said he knew nothing about botany or farming before he arrived at the station in December, 2014. "I was given this job probably because my office is next to the growth chamber, and as a doctor, I had more spare time than others," Wang said. He considered many factors, such as light, temperature and humidity. Light music is played in the 16-square - meter greenhouse around the clock. "Mild music is good for vegetable growth," he said. "We also played Buddhist music, which has soft melody."

    "Growers before me did very good work. My job was to maintain the chamber and keep everything working." Before the  harvest, researchers had a very limited vegetable supply—mostly potatoes and cabbage, which taste awful after months of storage. "Because of our success in growing vegetables, we can have fresh vegetables every day," he said. "The Russian station is no more than one kilometer away from ours. We even had enough vegetables to invite our Russian colleagues for dinner."

    Albert Einsein said," Only a life lived for others is worth living."

How does this job offer sound? You'll need to be available on short notice，including late at night and on weekends. You could be asked to do anything from helping at community events to responding to life-threatening emergencies (sometimes putting your own safety at risk). This job also involves a lot of regular training. Oh, and you won't be paid for any of this. Would you take the job?

    This job might not necessarily appeal to everyone, but if this sounds like an opportunity you'd eagerly accept，then you'd fit right in with Western Australia's 26,000 emergency service volunteers. The emergency services aren't the only industry benefiting from volunteers. Across both Australia and America, between a quarter and half of the population volunteer each year in areas including education, sports, health, religion, and social services.

    What motivates people to volunteer? Yes, volunteers don't get paid. But it doesn't mean people don't get benefits from volunteering. Indeed, research shows there are significant mental health benefits coming with volunteering. It can be a means to make new friends, build new skills or try things out of your comfort zone. It can also be a means to help loved ones. A case is someone close to me who recently lost her husband to a disease. When her husband was admitted to a nursing facility, she decided to volunteer for the patient advocacy committee. She found great support and felt she could make a difference in the lives of the patients. After her husband's passing, she decided to continue volunteering for the committee not only as a way to show gratitude for the great care her husband received but also because she made friends there. She found a way to put her career skills to use for the common good and keep active after retirement.

    There are countless ways to volunteer. No matter how you do it, it is definitely worth every minute you put into it.