Mary is the "Sedes Sapientiæ," the Seat of Wisdom
Mary has this title in her Litany, because the Son of God, who is also called in Scripture the Word and Wisdom of God, once dwelt in her, and then, after His birth of her, was carried in her arms and seated in her lap in His first years. Thus, being, as it were, the human throne of Him who reigns in heaven, she is called the Seat of Wisdom. In the poet's words:—
His throne, thy bosom blest,
O Mother undefiled,
That Throne, if aught beneath the skies,
Beseems the sinless Child.
But the possession of her Son lasted beyond His infancy—He was under her rule, as St. Luke tells us, and lived with her in her house, till He went forth to preach—that is, for at least a whole thirty years. For if such close and continued intimacy with her Son created in her a sanctity inconceivably great, must not also the knowledge which she gained during those many years from His conversation of present, past, and future, have been so large, and so profound, and so diversified, and so thorough, that, though she was a poor woman without human advantages, she must in her knowledge of creation, of the universe, and of history, have excelled the greatest of philosophers, and in her theological knowledge the greatest of theologians, and in her prophetic discernment the most favoured of prophets?