II.1 chapter 28

About that we love that we love: it is obvious, for we desire that one does not only know what is good, but also loves it.

We love that we love that is good: for in man a love for what is bad can exist alongside a love for what is good, and the good for us will be that the first diminishes and the last grows. For animals love a sensual life, plants a vegetative life, but man should recognize that these things are only imprints from God their creator, and return (like the son in the gospel [Luke 15]) to his true being, eternal truth, and eternal and true love.

We know about our being, knowledge and love by inner enlightenment; but about the outcome of their good or bad use we do not know, but need to have or look for truthful witness about these things, which we shall treat later. Instead, we will now continue with what we already started, from the City of God, not in a state of pilgrimage and mortality, but immortal in the heavens, about the angels who forever maintain their allegiance to God, separated, as we told, from those that fell from God and became darkness.