Einstein, Albert (1879–1955)
Einstein was a German-born physicist, best known for his theory of relativity, which is one of the two pillars of modern physics. After completing his education in Switzerland, he produced much of his work while at the Patent Office. Returning to Germany in 1914, he won the Nobel Prize in Physics in 1921. In 1933, he renounced his German citizenship (after Hitler came to power) and emigrated to the United States. He was appointed professor of theoretical physics at Princeton, retiring in 1945. He has been called one of the greatest physicists of all time.