1Juergen Haberams : Theorie des kommunikativen Handelns, Band I, Suhrkamp Verlag, 1981, S. 38 - 39.
2Juergen Habermas : Legitimation Crisis, trans, by Thomas McCarthy, Beacon Press, 1973, p. 15, p. 15.
3Juergen Habermas : The Language Game of Responsible Agency and the Problem of Free Will : How can epistemic dualism be reconciled with ontological monism? Philosophical Explorations, Volume 10, Issue 1,2007.
4Juergen Habermas : The Postnational Constellation :Political Essays ,The MIT Press ,2001, p. 155.
