 He supported the Lithuanian language and sponsored publication of the first Lithuanian printed books in the Grand Duchy of Lithuania.In 1595, Mikalojus Daukša translated a catechism by , Spanish Jesuit, and published it as "Catechism, or Education Obligatory to Every Christian" in Vilnius.Four years later, Daukša published the much larger "Catholic Postil" (collection of sermons) which was translated from a Polish postil by Jakub Wujek.