In the late tenth century, Latin had higher prestige than Anglo-Saxon, and hermeneutic Latin had higher prestige than simple Latin. This presented Byrhtferth with a problem in his Enchiridion, a school text designed to teach the complicated rules for calculating the date of Easter, as hermeneutic Latin is unsuitable for pedagogic instruction. His solution was to include passages in hermeneutic Latin condemning the ignorant and lazy secular clergy, who he said refused to learn Latin, thus justifying using Anglo-Saxon to provide clear explanations for their benefit.[35] In a passage in Latin he wrote: