Rorate Caeli

To all creatures she is Lady

The Blessed Evangelist Luke says significantly: "And the name of the Virgin was Mary" (Luke i, 27.) This most holy, sweet, and worthy name was eminently fitting to so holy, sweet, and worthy a virgin. For Mary means a bitter sea, star of the sea, the illuminated or illuminatrix. Mary is interpreted lady. Mary is a bitter sea to the demons; to men she is the star of the sea; to the angels she is illuminatrix, and to all creatures she is lady.

...Mary is ... illuminatrix by her most resplendent glory, which illuminates the whole of Heaven, as the sun doth the world, according to Ecclesiasticus: "The sun giving light hath looked upon all things, and full of the glory of the Lord is his work" (xlii, 16.)

The work of the Lord is full of His glory; the most excellent work of the Lord is Mary. This work, as it was full of the grace of the Lord in this world, is full of the glory of the Lord in Heaven. Thus, therefore, Mary, giving light by her glory, hath looked upon all things, because through all the angels and all the saints she spreadeth the illumination of her glory. What wonder if the presence of Mary illuminates the whole of Heaven, who also doth illuminate the whole earth?

Hail Mary! This most sweet and affectionate name, so full of grace and so noble, so glorious and so worthy, excellently befits Our Lady. For most fittingly is so loving a virgin named Mary. For she is Mary, in whom there is no vice, and who is glorious with every virtue.
Conrad of Saxony (erroneously attrib. to Saint Bonaventure),
Speculum Beatæ Mariæ Virginis