John Amos Comenius (Czech: Jan Amos Komenský; Slovak: Ján Amos Komenský; German: Johann Amos Comenius; Polish: Jan Amos Komeński; latinize: Iohannes Amos Comenius) (March 28, 1592 – November 15, 1670) was a Czech teacher, scientist, educator, and writer. He was a Unity of the Brethren/Moravian Protestant bishop, a religious refugee, and one of the earliest champions of universal education, a concept eventually set forth in his book Didactica Magna. Comenius became known as the teacher of nations.