Quick Facts
Born:
Nov. 30, 1802, Eutin, Oldenburg [Germany]
Died:
Jan. 24, 1872, Berlin (aged 69)
Britannica AI Icon
Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites

Friedrich Adolf Trendelenburg (born Nov. 30, 1802, Eutin, Oldenburg [Germany]—died Jan. 24, 1872, Berlin) was a German philologist, educator, prolific writer, and controversial philosopher who is remembered for his criticisms based on the thought of Aristotle and aimed against adherents of Immanuel Kant and G.W.F. Hegel.

Attracted to the study of Plato and Aristotle as a student, Trendelenburg attempted to arrive at a more accurate knowledge of Plato through Aristotle’s commentaries. At the end of seven years spent as a tutor to a private family, he wrote in 1833 his critical edition of Aristotle’s De anima (On the Soul). The same year, he was appointed extraordentlicher Professor at Berlin and four years later was advanced to ordentlicher Professor. In 1865 he began a controversial exchange with the German historian Kuno Fischer centring on Kant’s philosophical doctrine of space. Trendelenburg’s attack in Kuno Fischer und sein Kant (1869; ā€œKuno Fischer and His Kantā€) was met the next year by the response Anti-Trendelenburg.

Preferring to attend to problems of the real world, Trendelenburg viewed ethics in the context of politics and history rather than in the framework of purely philosophical formulations. Law, the state, and the actualization of human potential in the real world were central to Trendelenburg’s system, epitomized by his Naturrecht auf dem Grunde der Ethik (1860; ā€œNatural Law on the Basis of Ethicsā€). Among his other works are Elementa Logices Aristotelicae (1836; Outline of Logic), Logische Untersuchungen (1840; ā€œLogical Investigationsā€), and Die logische Frage in Hegels System (1843; ā€œThe Logical Question in Hegel’s Systemā€).

Agathon (centre) greeting guests in "Plato's Symposium" oil on canvas by Anselm Feuerbach, 1869; in the Staatliche Kunsthalle, Karlsruhe, Germany.
Britannica Quiz
Philosophy 101
This article was most recently revised and updated by Encyclopaedia Britannica.
Discover the fascinating events that shaped the world, straight from our editors.
By clicking ā€œSign Upā€, you consent to the Britannica Privacy Policy and Terms of Use.