“Antisemitism is not a belief system, a coherent set of ideas. In the 19th and early 20th century, Jews were hated because they were rich and because they were poor, because they are capitalists and because they’re communists, because they kept to themselves and because they penetrated everywhere, because they were superstitious believers and because there were rootless cosmopolitans who believed nothing. Antisemitism is not a belief, it is a virus, and like a virus it mutates.”
— Rabbi Jonathan Sacks