Habermas’s argument from human nature, which speaks in favour of holding back the use of human germline editing for purposes of enhancement, has lately received criticism anew. Prominent are objections to its supposedly genetic essentialist and determinist framework, which underestimates social impacts on human development. I argue that this criticism originates from an instrumentalist reading of Habermas’s argument, which wrongly focuses on empirical conditions and means-ends-relations. Drawing on Habermas’s distinction of a threefold use of practical reason, I show how an alternative—the ethical—reading avoids essentialist and determinist objections by addressing an existential level of sense making. I present three reasons that speak in favour of the ethical reading and I demonstrate how it incorporates social aspects of character formation. Habermas’s account therefore offers exactly what the critics claim is missing. The paper concludes with a conceptual challenge that the ethical reading has to face within Habermas’s overall approach to genetic engineering.
