This paper deals with some of Jürgen Habermas most recent writings concerning the role of religion in the public sphere and the reciprocal relationships between religious believers and the advocates of secular thought. An analysis of Habermas’ philosophy leads to a rebuttal of the popular thesis that includes the German thinker among post-secular philosophers. The main arguments against the thesis are: (1) the great disproportion between secular and religious contributions to legislative matters; (2) Habermas’ Kantian inspiration; (3) the role of genealogy in the formation of a subject; and (4) the idea of self-reflection.