in omnibus te ipsum praebe exemplum bonorum operum in doctrina integritatem gravitatem verbum sanum inreprehensibilem ut is qui ex adverso est vereatur nihil habens malum dicere de nobis (In all things shew thyself an example of good works, in doctrine, in integrity, in gravity, The sound word that can not be blamed: that he who is on the contrary part may be afraid, having no evil to say of us.)
Titus 2:7-8 (Latin Vulgate)