Shortly after his formulation of the general theory of relativity in 1915, Albert Einstein (a German-born Jew) delivered an address at the Sorbonne in Paris. "If my theory of relativity is proven successful," he declared, "Germany will claim me as a German and France will declare that I am a citizen of the world. Should my theory prove untrue, France will say that I am a German and Germany will declare that I am a Jew."
[In 1919, Einstein's theory was confirmed by observations made from the island of Principe during an eclipse. Fifteen years later, he left Germany for the United States (after Adolf Hitler's rise to power).]