ABSTRACT : The political philosophy of Jürgen Habermas, beyond its protean character, is worked in thebackground by the notion of public space which is practically the keystone in osmosis with the idea ofconsensus and communicational action. It is therefore necessary to study the habermasian ethics of discussionbecause it allows individuals to reach consensus through dialogue, interaction, democracy and even intersubjectivity. Thus, is the exacerbating optimism of the ethics of discussion not being hindered by a universalismthat underestimates and crushes the reference to the context, and particularly/notably to the idea of nation? Thisquestion would have allowed us to get out of the ethics of discussion as thought by Habermas and consider arecasting of this ideal of public space by leaning on patriotic constitutionalism asking to be comforted/reinforced by the idea of Nation-State.
Keywords -Consensus, Ethics, Communication, Cosmo citizenship, Democracy.