"Citizen" is a book written by Frank and Leonhard that examines modern society and its interaction with the citizen. In the conditions of constant changes and technological progress, the authors explore the concepts of civil freedom, responsibility and active participation in public life. The book offers the reader a deep analysis and reflection on how each of us can become a conscious and responsible citizen in our country. "Citizen" is an invitation to self-discovery and change for the better for yourself and society as a whole.