English summary: The author Johann Georg Hamann (1730-1788) from Konigsberg was a dialogical thinker. He was inspired and challenged in diverse ways by contemporary literature, but his thoughts were also an inspiration and a challenge to his dialogue partners. This is reflected particularly in his correspondence with Kant, Herder, Jacobi, Lavater, Claudius and others. Hamann and his correspondents struggled with fundamental questions of human existence between the poles of everyday experience and wisdom, sensuality and reason. The contributions to this volume examine his correspondence from a...