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Nicolai Hartmann

Nicolai Hartmann
Born (1882-02-20)20 February 1882
Riga, Livonia Governorate, Russian Empire
Died 9 October 1950(1950-10-09) (aged 68)
Göttingen, West Germany
Alma mater University of Tartu
Saint Petersburg Imperial University
University of Marburg
Era 20th-century philosophy
Region German philosophy
School Neo-Kantianism (early)
Realist phenomenology (late)
Critical realism (late)
Main interests
Ontology, Metaphysics, Epistemology, Ethics
Notable ideas
Strata of Being (Seinsschichten), neue Ontologie, categorial novum

Nicolai Hartmann (German: [ˈhaɐ̯tman]; 20 February 1882 – 9 October 1950) was a Baltic German philosopher. He is regarded as a key representative of critical realism and as one of the most important twentieth century metaphysicians.

Hartmann was born of German descent in Riga, which was then the capital of the Governorate of Livonia in the Russian Empire, and which is now in Latvia. He was the son of the engineer Carl August Hartmann and his wife Helene, born Hackmann. He attended from 1897, the German-language high school in Saint Petersburg. In the years 1902–1903 he studied Medicine at the University of Tartu (then Jurjev), and 1903–1905 classical philology and philosophy at the Saint Petersburg Imperial University with his friend Vasily Sesemann. In 1905 he went to the University of Marburg, where he studied with the neo-Kantians Hermann Cohen and Paul Natorp. In Marburg began a lifelong friendship with Heinz Heimsoeth. In 1907 he received his doctorate with the thesis Das Seinsproblem in der griechischen Philosophie vor Plato (The Problem of Being in Greek Philosophy Before Plato). In 1909 he published the book Platos Logik des Seins (The Logic of Being in Plato). The same year he completed his habilitation on Proclus: Des Proklus Diadochus philosophische Anfangsgründe der Mathematik (Proclus Diadochus' Philosophical Elements of Mathematics).


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