Karl Leonhard Reinhold (/ˈraɪnhoʊld/; Austrian German: [ˈraɪnhɔld]; 26 October 1757 – 10 April 1823) was an Austrian philosopher who helped to popularise the work of Immanuel Kant in the late 18th century. His "elementary philosophy" (Elementarphilosophie) also influenced German idealism, notably Johann Gottlieb Fichte, as a critical system grounded in a fundamental first principle.
He was the father of Ernst Christian Gottlieb Reinhold (1793–1855), also a philosopher.
The University of Jena, officially the Friedrich Schiller University Jena (German: Friedrich-Schiller-Universität Jena, abbreviated FSU, shortened form Uni Jena), is a public research university located in Jena, Thuringia, Germany.
The university was established in 1558 and is counted among the ten oldest universities in Germany. It is affiliated with six Nobel Prize winners, most recently in 2000 when Jena graduate Herbert Kroemer won the Nobel Prize for physics. It was renamed after the poet Friedrich Schiller who was teaching as professor of philosophy when Jena attracted some of the most influential minds at the turn of the 19th century. With Karl Leonhard Reinhold, Johann Gottlieb Fichte, G. W. F. Hegel, F. W. J. Schelling and Friedrich Schlegel on its teaching staff, the university was at the centre of the emergence of German idealism and early Romanticism.
Ernst Christian Gottlieb Reinhold (German: [ˈʁaɪnhɔlt]; 18 October 1793 – 17 September 1855) was a German philosopher. He was the son of Karl Leonhard Reinhold and grandchild of Christoph Martin Wieland.
He at first lectured on philosophy at the University of Kiel, and afterwards was appointed professor of logic and metaphysics at the University of Jena. His philosophical system resembles Immanuel Kant's.