20 I end as I began, not content to have given you but a single warning. Love the holy scriptures, and wisdom will love you. Love wisdom, and it will keep you safe. Honour wisdom, and it will embrace you round about. Let the jewels on your breast and in your ears be the gems of wisdom. Let your tongue know no theme but Christ, let no sound pass your lips that is not holy, and let your words always reproduce that sweetness of which your grandmother and your mother set you the example. Imitate them, for they are models of virtue.
Source: Letters (New Advent)