Albert Einstein Einstein did not return to Germany. He settled in the United States and became an American citizen in 1940. On the eve of World War II, he endorsed a letter to President Franklin D. Roosevelt alerting him to the potential development of "extremely powerful bombs of a new type" and recommending that the US begin similar research. This eventually led to the Manhattan Project. Einstein supported the Allies, but he generally denounced the idea of using nuclear fission as a weapon. He signed the Russell–Einstein Manifesto with British philosopher Bertrand Russell, which highlighted the danger of nuclear weapons. He was
Albert Einstein: Creator and Rebel Albert Einstein: Creator and Rebel Albert Einstein: Creator and Rebel is a book by Banesh Hoffmann with the collaboration of Helen Dukas. The book is a biography of Albert Einstein, including both his personal and academic life with references to specific events and people. The book also presents Einstein's photographs from his archives. The work was published in 1972 by Viking Press, , held in 1175 WorldCat libraries. It was reviewed by many general newspapers and magazines, including "The New York Times" and the "Los Angeles Times". It was also reviewed in academic periodicals, including "ISIS" It was translated into