a greatest inventor- Thomas Edison I'd love to talk about Thomas Edison, one of the greatest inventors in the world, who had over 2,000 inventions and more than 1000 patents. I knew some of the information about Edison when I was in elementary school. My teacher talked about some interesting stories about celebrities. When it came to Thomas Edison, I was really amazed by not only the number of his inventions, but also the importance, because the bulb used in everyone's house is one of his work. And because of this invention, people can work more efficiently these days, and can enjoy their leisure time at night. Actually, I learned more about this greatest inventor when I was an undergraduate. His success in innovation and business encouraged me to keep an optimistic attitude to life when I was frustrated, and his experience told me that recognization of one's talent and interests is really important for people to choose their career, because you can make use of your potential efficiently after realising it.