John Amos Comenius

Comenius, John Amos (Jan Amos Komensk; 1592–1670), Czech educational reformer and Protestant theologian, last bishop of the old Moravian church (from 1632). The Great Didactic (1628–32) was his best-known work. He advocated teaching in the vernacular instead of in Latin and favored a universal system open to women as well as men. His Visible World (1658) was probably the first children's picture book.