Mierzyński, Zdzisław (1861–1937)

Sheldon, Walter Lorenzo (1858–1907)

Dennert, Eberhard (1861–1942)

Kurnatowski, Jerzy (1874–1934)

Mach, Ernst (1838–1916)

Kozłowski, Władysław Mieczysław (1858–1935)

Menger, Anton (1841–1906)

Büchner, Ludwig (1824–1899)

Bernstein, Eduard (1850–1932)

Osterloff, Waldemar (1858–1925)

Horodyski, Władysław Henryk Franciszek (1885–1920)

Lenin, Vladimir Il'ič (1870–1924)

Guyau, Jean Marie (1854–1888)

Perelman, Abram (1888–1941)

Simmel, Georg (1858–1918)

James, William (1842–1910)

Potocki, Józef Karol (1854 – c. 1898)