by Jeff Thomas, International Man:

In 1933, Albert Einstein renounced his German citizenship soon after Adolf Hitler became Chancellor. Although that left him without a legal home, he was welcomed in England and later, the US, and eventually became a US citizen in 1935.

This was quite a risky move at the time, as he had no certainty of a better life outside of Germany, or even a prospective job. But he saw the writing on the wall. As a man of reason, he focused not on the present condition in Germany, but where events would ultimately lead. His focus was on the Germany of the future and he made a difficult call that those with less vision might not have made.