In this paper I will analyze the relation between the limitations on freedom of speech and the increasingly intense defense of “security” intended as a psychosomatic and material condition of well-being. I will consider, in particular, the evolution of the legal limitations on the freedom of speech, moving from the apparently new dilemma of the protection of self-preservation contrasting with the guarantee of individual liberties. I will describe the transition from an internal foundation of this kind of limitation, caused by the will to destroy the potential enemies of State power, to a new form of “thought control” existing in the international construction of general paradigms of “well-thinking”, in addition to those of a “well-doing.”