The Renaissance in Poland was not monolithic—it was multilingual, multiethnic, and intellectually porous. Latin remained the language of scholarship, but Polish began to emerge as a medium of refined literary expression. Writers like Mikołaj Rej, who declared that “Poles are not geese; they have their own language,” and Jan Kochanowski, whose lyrical mastery remains unsurpassed, brought humanist ideals into everyday speech and poetic form. Kochanowski’s Laments, written after the death of his daughter Urszula, fused classical structure with raw personal grief, marking a high point in Polish Renaissance literature. Meanwhile, the Commonwealth's diversity—encompassing Poles, Lithuanians, Ruthenians, Jews, Armenians, and Germans—fueled a cosmopolitan print culture. Texts circulated in Hebrew, Old Church Slavonic, and vernacular Polish, turning Poland into a republic of letters where religious and cultural difference coexisted with intellectual ambition.