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 in popular culture singer Giorgos Lembesis has released a song titled "Einstein" in which he states that he always admired Albert Einstein, but now he needs his help in his relationship problems. On the seventh episode of "Epic Rap Battles of History", Albert Einstein (portrayed by Zach Sherwin) faced off against Stephen Hawking (portrayed by series co-founder Nice Peter). The song Portrait (He Knew) by Kansas is about Albert Einstein and his life. Albert Einstein's handwriting has been digitised as a font in an art project by typographer Harald Geisler and dancer Elizabeth Waterhouse. The font enables the user to write like Einstein