• Metaphysics
• Political Philosophy
• Aesthetics

I am primarily interested in metaphysics, political philosophy, and aesthetics.  My book "Negatives Selbstbewusstsein" (2002) reflects upon Kant's theory of self-consciousness, and my book "Das Absolute und das Subjekt" (2008) deals with the tension between metaphysical and postmetaphysical thinking.  I have edited a volume on Spinoza's political philosophy (2006) and, together with the late Ruediger Bubner, the proceedings of the International Hegel-Congress 2005.  Currently, I am working on two major projects:  on a study on the relation between naturalism and humanism, and on a philosophy of music.