eleven o'clock at night
I should say that in Germany you could go out with a perambulator and get into enough trouble in half an hour to last you for a month . Any young Englishman anxious for a row with the police could not do better than come over to Germany and bring his perambulator with him . In Germany you must not leave your front door unlocked after ten o'clock at night , and you must not play the piano in your own house after eleven . In England I have never felt I wanted to play the piano myself , or to hear anyone else play it , after eleven o'clock at night ; but that is a very different thing to being told that you must not play it . Here , in Germany , I never feel that I really care for the piano until eleven o'clock , then I could sit and listen to the `` Maiden 's Prayer , '' or the Overture to `` Zampa , '' with pleasure . To the law-loving German , on the other hand , music after eleven o'clock at night ceases to be music ; it becomes sin , and as such gives him no satisfaction . The only individual throughout Germany who ever dreams of taking liberties with the law is the German student , and he only to a certain well-defined point .