爱因斯坦 One day, Einstein was walking in a street in New Youk. His close friend met him and said,"Einstein, you should buy a new coat. Look, how old your coat is!" But Einstein answered, "It doesn't matter. Nobody knows me here." After a few years, Einstein bacame a famous csientist in the world. But he still wore the old coat. The friend met him again and told him to buy a new coat. But Einstein said,"I needn't buy a new one. Everyone knows me here."