Friedrich Fromhold Martens, or Friedrich Fromhold von Martens, was a diplomat and jurist in service of the Russian Empire who made important contributions to the science of international law. He represented Russia at the Hague Peace Conferences and helped to settle the first cases of international arbitration, notably the dispute between France and the United Kingdom over Newfoundland. As a scholar, he is probably best remembered today for having edited 15 volumes of Russian international treaties (1874–1909).
Friedrich Maximilian von Klinger was a German dramatist and novelist. His play Sturm und Drang (1776) gave its name to the Sturm und Drang artistic epoch. He was a childhood friend of Johann Wolfgang von Goethe and is often closely associated with Jakob Michael Reinhold Lenz. Klinger worked as a playwright for the Seylersche Schauspiel-Gesellschaft for two years, but eventually left the Kingdom of Prussia to become a General in the Imperial Russian Army.
Friedrich Meinecke was a German historian, with national liberal and antisemitic views, who supported the Nazi invasion of Poland. After World War II, as a representative of an older tradition, he criticized the Nazi regime, but continued to express antisemitic prejudices.
Friedrich Melchior, Baron von Grimm was a German-born French-language journalist, art critic, diplomat and contributor to the Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers. In 1765 Grimm wrote Poème lyrique, an influential article for the Encyclopédie on lyric and opera librettos. Like Christoph Willibald Gluck and Ranieri de' Calzabigi, Grimm became interested in opera reform. According to Martin Fontius, a German literary theorist, "sooner or later a book entitled The Aesthetic Ideas of Grimm will have to be written."
Friedrich Wilhelm Nietzsche was a German philosopher, prose poet, cultural critic, philologist, and composer, whose work has exerted a profound influence on contemporary philosophy.
Friedrich Ratzel was a German geographer and ethnographer, notable for first using the term Lebensraum in the sense that the National Socialists later would.
