Who is the most successful person in the world seems to be inconclusive, depending on which aspect of success you are referring to. For example, in business, Bill Gates, Buffett, Li Ka-shing, Ma Yun and Ma Hua Teng of Chinese mainland are all successful entrepreneurs. Of course, there are many scientists who have made great achievements in various fields. There is no doubt that they are also very successful people, just like Nobel Prize winners, especially those medical experts who have made immortal contributions to saving people's lives. They are the most respected successful people!