Humboldt University Of Berlin

Karl Marx, the philosopher, economist, political theorist and socialist revolutionary, is best-known for the 1848 pamphlet, The Communist Manifesto and the three-volume Das Kapital. His theories, called Marxism, maintained that class conflict leads to the development of human societies and that internal tension were inherent in capitalism, which would ultimately be replaced by the socialist mode of production.

Max Weber was a German historian, political economist, jurist, and sociologist. Widely regarded as one of the most influential and important theorists, Weber's ideas had a profound influence on social research and social theory. Although he did not see himself as a sociologist, Weber is often counted among the fathers of sociology alongside Émile Durkheim, Auguste Comte, and Karl Marx.

German theoretical physicist Max Planck is remembered for originating the quantum theory of physics, which earned him the 1918 Nobel Prize in Physics. He laid down concepts such as the Planck constant and the Planck postulate. The Kaiser Wilhelm Society was later renamed Max Planck Society in his honor.

Felix Mendelssohn was a German composer of the early Romantic period. He was also a skilled organist, pianist, and conductor. He composed symphonies, concertos, chamber music, and organ music. His collection of lyrical piano songs Songs Without Words is among his best-known works. He was the founder of the public university The Leipzig Conservatory. He died aged just 38. 

Walter Benjamin was a German Jewish essayist, philosopher, and cultural critic. An eclectic thinker, Benjamin made significant contributions to literary criticism, aesthetic theory, and historical materialism. Although Benjamin's work did not earn much recognition during his lifetime, it continues to be revered by academics several years after his death.

Remembered for her pioneering work on feminist psychology, Karen Horney studied medicine at a time when women weren’t allowed in universities. Going against Sigmund Freud’s concept of penis envy, she suggested the idea of womb envy. She believed psychological differences weren’t rooted in gender but rather depended on the socio-cultural influences.

Georg Simmel was a German sociologist, philosopher, and critic considered a forerunner to structuralist styles of reasoning in the social sciences. He was neo-Kantian in his approach and laid the foundations for sociological antipositivism. He broadly rejected academic standards and wrote extensively on the philosophy of Schopenhauer and Nietzsche. He was married to philosopher Gertrud Kinel and had one son. 

Carl Gustav Jacob Jacobi was a German mathematician best remembered for his contributions to differential equations, dynamics, number theory, determinants, and elliptic functions. He is the first Jewish mathematician to work as a professor at a German university. Jacobi has a crater on the Moon named after him in recognition of his contribution to science.

German banker Hjalmar Schacht was appreciated for his role in saving the Weimar Republic from inflation and later served as the Reichsminister of Economics under Adolf Hitler. Following as assassination attempt on Hitler, her was imprisoned, but was later freed and then set up his own bank in Düsseldorf.

Considered the national poet of Romania, Mihai Eminescu was a major figure of Romanticism in Romanian literature. Starting as an editor for the paper Timpul, he later penned iconic poems such as Luceafărul, or The Evening Star, and stories such as Sărmanul Dionis and Cezara. He, unfortunately, died in a mental asylum.

Born to an Indian freedom fighter, Ram Manohar Lohia grew up to follow in his father’s footsteps and joined the Indian National Congress to oust the British. He was also associated with Gandhiji’s Quit India movement. He had also co-established the Congress Socialist Party and written extensively on the caste system.

German mathematician Richard Dedekind is best remembered for his ideas on the real number and infinity. Initially interested in subjects such as physics and chemistry, he later deviated to math. He taught at various institutes and was awarded honorary doctorates from universities of Zurich, Oslo, and Braunschweig.

One of the pioneers of Western Marxism, Hungarian philosopher and literary critic György Lukács also taught at the University of Budapest and later became a major pillar of the Hungarian uprising. His best-known written works include Soul and Form and The Historical Novel, apart from his books on Goethe, Lenin, and Marx.

Gustav Ludwig Hertz was a German experimental physicist best known for his work on inelastic electron collisions in gasses, in collaboration with James Franck. They received the 1925 Nobel Prize in Physics. Hertz worked at the University of Berlin and served in the military during World War I. He was a Member of the German Academy of Sciences.

Best remembered for his incomplete novel The Man Without Qualities, Austrian-German novelist Robert Musil had worked as a librarian, editor, and journalist and was also a qualified mechanical engineer. He had also served in the army during World War I but mostly gained fame as a modernist writer.

Werner Sombart was a German sociologist and economist. He was one of the 20th century's most important Continental European social scientists who served as the leader of the Youngest Historical School. Werner Sombart is credited with coining the phrase late capitalism. He is also remembered for his magnum opus, Der moderne Kapitalismus.

Erich Neumann was a psychologist, philosopher, and writer. He completed his Ph.D. in philosophy from the University of Erlangen-Nuremberg and studied medicine at the University of Berlin. He was a student of Carl Jung and regularly gave lectures at the C. G. Jung Institute. He was a member of the International Association for Analytical Psychology as well.  

Joachim Sauer is a German professor emeritus of theoretical and physical chemistry at the prestigious Humboldt University of Berlin. Sauer is an active research scientist in computational and quantum chemistry. His work has helped understand the structures and activities of catalysts like zeolites. Joachim Sauer has won several prestigious awards such as the Schrödinger Medal and Liebig Medal.

Karl Heinrich Ulrichs was a German lawyer, journalist, jurist, and writer. Today, he is widely regarded as a pioneer of the modern gay rights movement and sexology. Ulrichs is considered the first openly gay man in the history of mankind. In August 1867, Karl Heinrich Ulrichs urged the goverment to revoke anti-homosexual laws, becoming the first homosexual to do so.

Friedlieb Ferdinand Runge was a German analytical chemist best remembered for identifying caffeine. He is also credited with identifying the mydriatic effects of belladonna extract and discovering the first coal tar dye. Friedlieb Ferdinand Runge was also the first person to observe the phenomenon of Liesegang rings in 1855.

A qualified doctor and a lung diseases specialist, Sabine Bergmann-Pohl had been the head of state of East Germany before the German reunification. She has also led the Volkskammer as its president and was the Federal Minister for Special Affairs under Helmut Kohl. The mother of two is a Protestant.

Hans Modrow is a German politician best known as East Germany's last communist premier. In 1995, Modrow was convicted of perjury and electoral fraud by the Dresden District Court after the conclusion of Communist rule in Germany. Since German reunification, Hans Modrow has been writing several books on his political experiences.

Gustav Heinemann was the first Social Democrat to serve as the head of state in West Germany following World War II. Known widely as the ordinary man's President, he was knighted, too.  A lecturer of law, too, his reluctance to support the Nazis probably ended his teaching career.

Hermann Grassmann was a German polymath remembered for his work in linear algebra, although he wasn’t acknowledged as a mathematician for most part of his life. His work Die lineale Ausdehnungslehre, ein neuer Zweig der Mathematik was revolutionary in the field of mathematics and was far ahead of its time. During his lifetime, he was only known as a linguist.

German socialist radical Karl Liebknecht is best remembered for co-founding the Spartacus League, an underground group that was declared illegal but later led to the formation of the Communist Party of Germany. He was shot to death on the orders of German commander Waldemar Pabst in the 1919 Spartacus Revolt.

Latvian-born Aron Nimzowitsch escaped to Berlin and then to Copenhagen to avoid being drafted into the army during the Russian Revolution. He is best known for his cult classic book My System, which promotes the Hypermodern school of chess. In spite of repeated attempts, he failed to secure a world title.

German singer-songwriter Wolf Biermann caused massive protests among the German public after his 1976 expatriation from the German Democratic Republic. His communist ideals and political theater caused him to be banned in East Germany. His East German citizenship, too, was revoked. His song Ermutigung talks about his struggles.