Jew-hatred, Einstein wrote, was “an omnipresent enemy, one that is impossible to see, and whose presence you only perceive.” By TPS A rare handwritten letter, authored and signed by Albert Einstein and sent to a friend in 1936 who was considering a position in American academia, provides a glimpse of 0the level of antisemitism in the US and the difficulties a Jewish immigrant with no connections might expect to face at the time. “A tremendous degree of anti-Semitism exists here, especially in academia (though also in industry and banking),” Einstein wrote to his friend, Austrian Jewish pianist Bruno Eisner. “Mind...