Paul Erdős was a very interesting person. I read his biography The Man Who Loved Only Numbers. He couch surfed and wrote papers with others his entire life and

Paul Erdős was a very interesting person. I read his biography The Man Who Loved Only Numbers. He couch surfed and wrote papers with others his entire life and became the most prolific published mathematician ever. He also loved to teach kids serious math and not underestimate their thinking. Also I believe his name is pronounced like air-dish.