He received his doctorate on Hegel's Science of Logic, and its introduction in the form of Phenomenology of Spirit.
In October 1981, he became chair of philosophy (Ordinarius) in Heidelberg, thereby succeeding Michael Theunissen, and thus Hans-Georg Gadamer as well.
[2] His research areas were German Idealism (Kant, Hegel), Metaphysics and practical philosophy.
During his presidency of the Vereinigung, the prestigious Hegel Prize of the City of Stuttgart was awarded to Niklas Luhmann, Donald Davidson and Jacques Le Goff.
[2] He argued with Michael Theunissen about Hegel's logic as a universal theory of communication, meticulously engaging with his opponents, he rejected the ‘inversion’ of Hegel by Marxism, he reconstructed Friedrich Jacobi's critique of materialist enlightenment.