Today is the feast of St. Ambrose of Milan, Doctor of the Church. From his On the Holy Spirit (Book I, ch. 3):
If the Son is above all, through Whom our salvation received its commencement, so that it might be preached, certainly God the Father also, Who testifies and gives confirmation concerning our salvation by signs and wonders, is excepted from all. In like manner the Spirit, Who bears witness to our salvation by His diversities of gifts, is not to be numbered with the crowd of creatures, but to be reckoned with the Father and the Son; Who, when He divides, is not Himself divided by cutting off Himself, for being indivisible He loses nothing when He gives to all, as also the Son, when the Father receives the kingdom, loses nothing, nor does the Father, when He gives that which is His to the Son, suffer loss. We know, then, by the testimony of the Son that there is no loss in the division of spiritual grace; for He Who breathes where He wills is everywhere free from loss.
