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.