He was also most likely a freemason:
Friedrich Schiller (1759–1805), German poet and dramatist of the Weimar Classical era, is often associated if not with Freemasonry then at least with the milieu in which Masonry thrived. While Schiller is often thought to have been a Mason, Dr. S. Brent Morris, managing editor of the Scottish Rite Journal, notes that “if you cannot find a lodge name and number for someone claimed to be a Mason, the claim is likely dubious.” Indeed, in 10,000 Famous Freemasons (vol. 4), William R. Denslow notes that “Masonic membership has not been definitely established, but German brethren believe he was a member of Rudolstadt Lodge of Berlin.”
Schiller’s Masonic membership is thus shrouded in mystery, but the ideals of Enlightenment, reason, and equality—Masonic ideals— shine forth in his play William Tell and his ballad “The Hostage,” both of which co l ndemn tyranny. Another of Schiller’s poems inculcating humanistic virtues is “Ode to Joy,” immortalized and winning an international audience as the Fourth Movement to Beethoven’s Ninth Symphony. In “Hymn to Joy,” Masonic ideals also bloom, for here Schiller writes that “all mankind are brethren ever.
https://archive.ph/MabNN
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