It’s well known to all that interest plays an important role in one’s life. Bill Gates, the richest man in the world, regards the computer as part of his life and has made good progress on its technology. In order to pursue the interest, he gave up studying in Harvard University, which is the most famous in the world. He set up a company and researched the computer softs to make huge profits. An old saying goes: Interest is the best teacher. I quite agree with this idea. I began to be crazy about English when I was a little girl. I got interested in foreign cultures and customs in particular. To meet my curiosity, I read English stories everyday. It seems to be the best meal of a day. As a result, I always did very well in English exams. Interest is the key to success. A person who is interested in something will devote himself to it. Meanwhile, a big miracle will be made.