sentences:  Rochau wrote that "to bring down the walls of Jericho, the Realpolitiker knows the simple pickaxe is more useful than the mightiest trumpet".Rochau's concept was seized upon by German thinkers in the mid and late 19th century and became associated with Otto von Bismarck's statecraft in unifying Germany in the mid 19th century.By 1890, usage of the word "Realpolitik" was widespread, yet increasingly detached from its original meaning.