Ovid, D&I: 200-220 Tools A B ala, -ae wing celsus, -a, -um high, lofty erudio, -ire to teach (a person and/or a skill) levo, -are to lift, raise up libro, -are to to hold suspended, balance, poise monitus, -us advice, warning nidus, -i nest opifex, opificis craftsman, artisan praeceptum, -i advice, precept; instruction, order; principle, rule volo, -are to fly