the unity of the divine nature. Therefore, in that Holy Trinity—and I keep on saying it so that it may be fixed in your heart the more firmly—the Father is one, who alone by his nature has generated the one Son from himself; and the Son is one, who alone has been born from the nature of the one Father; and the Holy Spirit is one, who alone proceeds from the essence of the Father and the Son. All of this is not possible for one person, that is, to generate oneself and to be born of oneself and to