Classical realism and Morgenthau in particular have recently experienced a revived interest in International Relations (IR). The evolving debate has helped to contextualise and reconstruct Morgenthau's thought which until now had been misrepresented in structural realist and early poststructuralist interpretations. However, despite all of its achievements, we have yet to draw more attention to Morgenthau's contribution to contemporary IR theory. To contribute to the closing of this research gap this article considers a set of questions which Morgenthau himself asked at (...) the beginning of his career as its conceptual framework. It is argued that Morgenthau was particularly concerned with the dehumanisation of socio-political life in modern democracies evoked through processes of ideologisation, technologisation, and scientification, which he countered by focusing on a re-introduction of the human factor to politics. This demonstrates that Morgenthau's work is a rich source for IR theory because his intellectual agenda was driven by concerns similar to what we find in poststructuralism. (shrink)