John of Garland, Alexander Neckam and Roger Bacon were three great writers of the thirteenth century who all wrote on various aspects of Latin language and culture, and of the importance of, and ways of, learning Latin. Garland and Neckam wrote imaginative lexicographical works, teaching Latin words by reference to everyday life and vernacular words. Roger Bacon wrote many learned works on numerous subjects and believed in the necessity of learning foreign languages, primarly Latin, Greek, Hebrew and Arabic in order to study the Bible and sciences.