Academic staff of the Humboldt University of Berlin

Friedrich Wilhelm Erich Leschke (23 October 1887, in Bergneustadt – 10 June 1933, in Berlin) was a German internist.
He studied medicine at the University of Bonn, receiving his doctorate in 1911 with the thesis Über die Wirkung des Pankreasextraktes auf pankreasdiabetische und auf normale Tiere ("On the effect of pancreatic extract on pancreatic-diabetic and normal animals"). He later worked at the Friedrich-Wilhelm-Stift in Bonn, at the Eppendorf Hospital in Hamburg and in the 2nd medical clinic at the Berlin Charité. In 1918 he obtained his habilitation at Berlin, where soon afterwards he became an associate professor.His name is associated with Leschke's syndrome, a condition characterized by a combination of asthenia, multiple brown pigment spots on the skin and hyperglycemia. He described the syndrome in a 1922 paper titled Über Pigmentierung bei Funktionsstörungen der Nebenniere und des sympathischen Nervensystems bei der Recklinghausenschen Krankheit.He was the author of numerous papers regarding cardiac, pulmonary and metabolic diseases. His book Die wichtigsten vergiftungen, Fortschritte in deren Erkennung und Behandlung was translated into English and published as Clinical toxicology; modern methods in the diagnosis and treatment of poisoning (1934).

Karl Holl (15 May 1866 – 23 May 1926) was a professor of theology and church history at Tübingen and Berlin and is considered one of the most influential church historians of his era.

Friedrich Jolly (24 November 1844 – 4 January 1904) was a German neurologist and psychiatrist who was a native of Heidelberg, and the son of physicist Philipp von Jolly (1809–1884).
He studied medicine at Göttingen under Georg Meissner (1829–1905), and in 1867 received his doctorate at Munich. In 1868 he became an assistant to Bernhard von Gudden (1824–1886) and Hubert von Grashey (1839–1914) at the mental institution in Werneck, and in 1870 was an assistant to Franz von Rinecker (1811–1883) at the Juliusspital in Würzburg.
In 1873 Jolly became director of the psychiatric clinic in Strassburg, where he was named as successor to Richard von Krafft-Ebing (1840–1902). In 1890 he succeeded Karl Friedrich Otto Westphal (1833–1890) as director of the neuropsychiatric clinic at the Berlin Charité.
Jolly is remembered for his pioneer research of myasthenia gravis, including the electrophysiological aspects involving abnormal fatigue associated with the disease which forms the basis of Jolly's test. He is credited with coining the term myasthenia gravis pseudoparalytica for the disorder.
He was the author of an influential treatise on hypochondria that was published in Hugo Wilhelm von Ziemssen's "Handbuch der speciellen Pathologie und Therapie". His "Untersuchungen über den elektrischen Leitungswiderstand des menschlichen Körpers" (1884) was fundamental to the study of electrical diagnostics.His grave is preserved in the Protestant Friedhof III der Jerusalems- und Neuen Kirchengemeinde (Cemetery No. III of the congregations of Jerusalem's Church and New Church) in Berlin-Kreuzberg, south of Hallesches Tor.

Heinrich Hubert Maria Josef Houben (27 October 1875, in Waldfeucht (Rheinland) Germany – 28 June 1940, in Tübingen) was a German chemist. He made achievements within ketone synthesis, terpenes, and camphor studies. After being wounded several times on the front lines in World War I, Houben was made head of the war laboratory. He improved the Hoesch reaction which is now normally called Houben-Hoesch reaction. Houben organized and made a major rework of the book Methods of Organic Chemistry which is now referred to as Houben-Weyl Methods of Organic Chemistry.

Ludwig Georg Elias Moses Bieberbach (German: [ˈbiːbɐˌbaχ]; 4 December 1886 – 1 September 1982) was a German mathematician and Nazi.

Walter Emmerich Behrmann (May 22, 1882, Oldenburg – May 3, 1955, Berlin) was a German geographer. He is remembered for introducing a cylindrical map projection known as the "Behrmann projection".

Karl Wilhelm Ferdinand Solger (28 November 1780, Schwedt – 20 October 1819, Berlin) was a German philosopher and academic. He is known as a theorist of Romanticism, and of irony.

Hermann Alexander Diels (German: [diːls]; 18 May 1848 – 4 June 1922) was a German classical scholar, who was influential in the area of early Greek philosophy and is known for his standard work Die Fragmente der Vorsokratiker. Diels helped to import the term Presocratic into classical scholarship and developed the Diels–Kranz numbering system for ancient Greek Pre-Socratic texts.

Felix Ludwig Julius Dahn (9 February 1834 – 3 January 1912) was a German law professor and nationalist author, poet and historian.

Eduard Spranger (27 June 1882 – 17 September 1963) was a German philosopher and psychologist. A student of Wilhelm Dilthey, Spranger was born in Berlin and died in Tübingen. He was considered a humanist who developed a philosophical pedagogy as an act of 'self defense' against the psychology-oriented experimental theory of the times.Spranger was the author of the book Lebensformen (Translated as Types of Men), which sold 28,000 copies by the end of 1920. Spranger theorizes that types of human life are structures in consciousness. His belief was that personality types have a basis in biology, but can not be fully explained by biology. He wrote, "On a lower level, perhaps, the soul is purely biologically determined. On a higher level, the historical, for instance, the soul participates in objective values which cannot be deduced from the simple value of self-preservation." He criticized psychologists who reduced the psyche and society to abstract elements of science. Another characteristic of Spranger's thought is his interest in holism, which involves the discovery that "everything is part of everything else," and that the "totality of mind is present in every act." He asserts that quantitative calculations of sensations, reflexes, and citations from memory are meaningless units, that when synthesized, do not add up to the meaningful whole that we all live.