Miklaševskij, Aleksandr Nikolaevič (1864–1911)

Jaeckh, Gustav (1866–1907)

Lucianus Samosatensis (c. 120 – c. 190)

Twardowski, Kazimierz (1866–1938)

Arndt, Johann (1555–1621)

Achelis, Thomas (1850–1909)

Twardowski, Kazimierz (1866–1938)

Limanowski, Bolesław (1835–1935)

Meyer, Max Wilhelm (1853–1910)

Bölsche, Wilhelm (1861–1939)

Høffding, Harald (1843–1931)

Garfein-Garski, Stanisław (1867–1928)

Posner, Stanisław (1868–1930)

Posner, Stanisław (1868–1930)

Ciembroniewicz, Józef (1877–1929) Szyc, Aniela (1869–1921)

Bandrowski, Bronisław (1879–1914)

Gall, Stanisław (1865–1942) Tauer, Antoni (1873–1910)

Lunačarskij, Anatolij Vasil'evič (1875–1933)

Kobyłecki, Stanisław (1864–1939)

Jaurès, Jean (1859–1914) Lafargue, Paul (1842–1911)

Czaki, Franciszek (1874–1935)

Klimke, Friedrich August (1878–1924)

Proal, Louis (1843–1900)

Berent, Wacław (1873–1940)

Biegański, Władysław (1857–1917)