Nicolai Hartmann

Nicolai Hartmann
Born19 February [O.S. 7] 1882
Died9 October 1950(1950-10-09) (aged 68)
Education
Alma materUniversity of Yuryev
Saint Petersburg Imperial University
University of Marburg
Academic advisorsHermann Cohen
Paul Natorp
Philosophical work
Era20th-century philosophy
RegionWestern philosophy
SchoolContinental philosophy
Neo-Kantianism (early)
Realist phenomenology (late)
Critical realism (late)
Doctoral studentsCarl Gustav Hempel
Main interestsMetaphysics, epistemology, ethics
Notable ideasStrata of Being (Seinsschichten), new ontology (neue Ontologie), categorial novum

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