Ontologists

British mathematician and astronomer (1877 – 1946)

Jewish-French-Lithuanian philosopher

French philosopher

German Christian mystic and theologian (1575-1624)

Proclus Lycius (; 8 February 412 – 17 April 485), called Proclus the Successor (, ), was a Greek Neoplatonist philosopher, one of the last major classical philosophers of late antiquity. He set forth one of the most elaborate and fully developed systems of Neoplatonism and, through later interpreters and translators, exerted an influence on Byzantine philosophy, early Islamic philosophy, scholastic philosophy, and German idealism, especially G. W. F. Hegel, who called Proclus's Platonic Theology "the true turning point or transition from ancient to modern times, from ancient philosophy to

German philosopher, psychologist, and founder of pedagogy as an academic discipline (1776-1841)

German historian, psychologist, sociologist, student of hermeneutics, and philosopher (1833–1911)

French academic

American philosopher (1932–2025)

American philosopher (1931–2007)

American philosopher

German philosopher and psychologist as well as refounder of the theory of intentionality (1838–1917)

Scottish philosopher (1694–1746)

British philosopher

Scottish-American philosopher (1929–2025)

French historian and philosopher (1884-1978)

Christian preacher, philosopher, and theologian (1703-1758)

Canadian philosopher (born 1931)

German philosopher (1848–1915)

American author, futurist, and agnostic mystic (1932-2007)

German theologian, philosopher, and comparative religionist (1869-1937)

German philosopher and scientist (1824-1899)

Argentine-Canadian philosopher (1919-2020)

German philosopher (1882–1950)

Gauḍapāda (Sanskrit: गौडपाद; ), also referred as Gauḍapādācārya (Sanskrit: गौडपादाचार्य; "Gauḍapāda the Teacher"), was an early medieval era Hindu philosopher and scholar of the Advaita Vedanta school of Hindu philosophy. While details of his biography are uncertain, his ideas inspired others such as Adi Shankara who called him a Paramaguru (highest teacher).

American philosopher (1906–1998)

German philosopher (1863-1936)

British-American philosopher and writer

French philosopher

German philosopher

German philosopher and theologian (1814-1908)

French philosopher (1766-1824)

Australian-born British philosopher (1859-1938)

Polish philosopher (1893–1970)

American philosopher (1901-1985)

Polish philosopher, psychologist and logician (1866–1938)

German-born British philosopher

French academic (1883–1951)

German philosopher (1921–2023)

French philosopher (1904-1995)

French historian and philosopher (1922–2010)

American philosopher (1929–2017)

German philosopher (1905-1975)

South African philosopher and academic

German philosopher and educator (1846–1908)

French academic (1813–1900)

American philosopher (1929–2023)

American philosopher (1876–1957)

American philosopher (1883–1964)

Spanish essayist and university professor

French philosopher

French philosopher, writer and sociologist

Japanese philosopher (1885–1962)

Romanian philosopher, essayist and poet (1909–1987)

American philosopher (1911-1990)

American philosopher (born 1968)

American philosopher (1897–2000)

German philosopher (1830–1881)

Japanese philosopher (1900–1990)

Russian philosopher (1837-1890)