In the will Nobel writes, he saids:"to those who, during the preceding year, shall have conferred the greatest benefit on mankind." So there is the Nobel Prize, the money comes from the interest of Nobel's money made by his inventions. He sets up five catogories, which is Physics, Chemistry, Medicine, Peace and literature. Later, to celebrate the 300th year of Bank of Sweden, the catogory economiccs was added. Now,this is one of the most valuebal prizes.