419. A person who loves good because it is good, and truth because it is true, is the one who above all loves the neighbour, because he loves the Lord, who is good itself and truth itself. There is no other source of the love of good and of truth from good, and so of the neighbour. This is how love towards the neighbour is formed from its heavenly origin. It makes no difference whether we say service or good; performing services is doing good, and good deeds are good depending to what extent and in what way they are of use.