“It's all Greek to me”in other languages

Same idea, different pictures

Each language picks its own example of the incomprehensible. English chooses Greek, French chooses Hebrew, and German, oddly, a train station: Ich verstehe nur Bahnhof, “I only understand station”.

English owes its version largely to Shakespeare. In Julius Caesar, Casca reports that Cicero spoke in Greek, and adds: “for mine own part, it was Greek to me.”

For the German one, a popular explanation points to soldiers at the end of the First World War who wanted to hear about nothing but the station and the train home. It's a good story, not a proven one.