Berlin theologian and philosopher Friedrich Schleiermacher (1768–1834) engaged in extensive correspondence. Volume 17 of the 5th Section of the crit. ed. of Schleiermacher’s Collected Works contains his letters for 1825–1828. The controversy surrounding the liturgy decreed by the King of the Protestant Church of Prussia reaches its climax, with Schleiermacher leading the opposition, while a trip in summer 1828 takes him to Holland and England.