Krabbe, H. Keywords: States | Executive power | Political science | Mots clefs: Etats | Pouvoir exécutif | Sciences politiques | ABSTRACT Hugo Krabbe indicates in the introduction to his course that the subject of the Modern Idea of the State brings us into contact with the problem that constitutes the essence of political science, namely the foundation of the State. Power has three successive foundations: it was first founded on the nature of a community. The foundation of political power was then sought in a person…