Everything outside of us fluctuates with the storms and temptations of this age. But we need an interior desert where we gather ourselves and live of our faith.
Mary did the will of the Father, and that is why it is greater for her to have been a disciple of Christ than to have been the mother of Christ.
To have a good idea of God is the truest beginning of piety.
(De libero arbitrio I, 2,5)