German theorist, Niklas Luhmann, develops a systems theory approach to society and demonstrates the ways in which systems work only in relation with their environment.

He is the grandson of German critical theorist and philosopher Herbert Marcuse.

They paid little attention to Voltaire or Rousseau or to German theorists.

He asserts it was not used by German military theorists or by the German Army prior to 1939.

Friedrich Kittler, 68, German literary scholar and media theorist.

These popular social media outlets are what German theorist Jurgen Habermas' would define as the "public sphere."

Hans Delbrück's seminal study of the battle had a profound influence on subsequent German military theorists, in particular on Schlieffen.

Carl von Clausewitz, Prussian soldier and German military theorist (d. 1831)

Christian Hellwig is a German economic theorist and macroeconomist who did research in the field of global games.

Carl von Clausewitz (1780-1831) was the most important German military theorist; he stressed the moral and political aspects of war.