For over half a century, Hubertus Halbfas has significantly influenced and shaped religious education - contentious and controversial, consistent and creative. Here he presents his autobiography. What has almost been overlooked can now be followed in an engaging read: the debate surrounding his book "Fundamental Catechetics," which opened a new chapter for religious education. His previously inaccessible correspondence with bishops and cardinals. Their statements regarding his theology, which have since been overtaken by developments. The consistent consideration of the results of biblical research, particularly historical criticism, even when it necessitates dogmatic corrections. The primacy of absolute truthfulness in theology for the sake of engaging in discussions that do not shy away from difficult questions, but rather publicly addresses them, no matter what.