Otto von Bismarck, the Iron Chancellor, was once offended beyond endurance by a physician-turned-politician, Rudolf Virchow, and challenged him to a duel.

• 铁血首相俾斯麦有一次被弃医从政的鲁道夫．菲尔霍气得怒不可遏，问菲尔霍敢不敢决斗。