Martin Opitz (1597–1639), poet, literary reformer, diplomat and cultural politician, is known as the "Father of German Poetry". As an important representative of Late European Humanism he did in fact write a large proportion of his works in Latin, a fact of which hitherto little account has been taken. The present edition publishes all his Latin texts, including numerous newly-discovered writings; they are translated and provided with a detailed commentary and thus made available to scholars from a variety of disciplines.