136. Like people on earth, angels have discernment and volition. Heaven's light produces their cognitive life because heaven's light is divine truth and the divine wisdom that comes from it; while heaven's warmth produces their volitional life because heaven's warmth is the divine good and the divine love that comes from it. The quintessential life of angels is from the warmth, but not from the light except to the extent that there is warmth in it. We can see that life comes from the warmth because when the warmth is taken away life dies. It is the same for faith without love or for truth without goodness, since the truth that is attributed to faith is light and the goodness that is attributed to love is warmth. ¹

All this becomes even clearer from the warmth and light of our world, to which heaven's warmth and light correspond. From the warmth of our world, united to its light, all things on earth come to life and blossom. They are united in spring and summer. However, nothing comes to life or blooms from light separated from warmth - everything languishes and dies. They are disunited in winter, when the warmth is gone but the light remains. It is from this correspondence that heaven is called a paradise, because there the true is united to the good, or faith to love, as light is united to warmth in springtime on earth.

This gives even clearer support to the truth discussed above in 13-19, that the Lord's divine nature in heaven is love for him and thoughtfulness toward one's neighbor.

Footnotes:

4997. 'How then shall I do this great evil, and sin against God?' means that, this being so, they exist set apart and not joined together. This is clear from the meaning of 'evil' and likewise of 'sin' as a state when things are set apart and not joined together. That is to say, it describes what happens if spiritual natural good is joined to unspiritual natural truth; being unlike and incompatible the two pull away from each other. The expressions 'doing evil' and 'sinning against God' are used because regarded in itself evil, and sin too, is nothing else than being parted from good. Also, evil exists essentially in disunion, as is evident from what good is. Essentially good is a joining together because all good stems from love to the Lord and love towards the neighbour. The good of love to the Lord joins a person to the Lord and consequently to all good that goes forth from the Lord; and the good of love towards the neighbour joins him to heaven and the communities there, so that by means of this love as well he is joined to the Lord. For properly speaking, heaven is the Lord since He is the All in all there.

[2] But with evil the opposite applies. Evil stems from self-love and love of the world. Evil stemming from self-love sets a person apart not only from the Lord but also from heaven, for he loves no one but himself and others only insofar as he sees them as part of his self-interest, or as they identify themselves with him. Consequently he turns everyone's attention towards himself and entirely away from others, most of all away from the Lord. When a large number act like this within a single community it follows that all are set apart from one another; inwardly each sees another as his enemy. If anyone acts contrary to his self-interest he hates that person and takes delight in his destruction. The evil of the love of the world is not dissimilar, for this consists in a longing for other people's wealth and goods, and in a longing to gain possession of everything owned by others; and these longings too lead to all kinds of enmity and hatred, though in a lesser degree. For anyone to come to know what evil is, and so what sin is, let him merely try to see what self-love and love of the world are; and to come to know what good is, let him merely try to see what love to God and love towards the neighbour are. By trying to do this he will come to see what evil is, and as a consequence what falsity is; and from this he will come to see what good is, and as a consequence what truth is.