Dybowski, Benedykt (1833–1930)
Gall, Stanisław (1865–1942) Tauer, Antoni (1873–1910)
Høffding, Harald (1843–1931)
Buisson, Ferdinand (1841–1932)
Jaurès, Jean (1859–1914) Lafargue, Paul (1842–1911)
Høffding, Harald (1843–1931)
Kovalevskij, Maksim Maksimovič (1851–1916)
Adamski, Józef Stanisław (1854–1926)