396. All delights flow forth from love, for that which a man loves he feels to be delightful. No one has any delight from any other source. From this it follows that such as the love is such is the delight. The delights of the body or of the flesh all flow forth from the love of self and love of the world; consequently they are lusts and their pleasures; while the delights of the soul or spirit all flow forth from love to the Lord and love towards the neighbor, consequently they are affections for good and truth and interior satisfactions. These loves with their delights flow in out of heaven from the Lord by an inner way, that is, from above, and affect the interiors; while the former loves with their delights flow in from the flesh and from the world by an external way, that is, from beneath, and affect the exteriors. Therefore as far as the two loves of heaven are received and make themselves felt, the interiors of man, which belong to his soul or spirit and which look from the world heavenwards, are opened, while so far as the two loves of the world are received and make themselves felt, his exteriors, which belong to the body or flesh and look away from heaven towards the world, are opened. As loves flow in and are received their delights also flow in, the delights of heaven into the interiors and the delights of the world into the exteriors, since all delight, as has just been said above, belongs to love. 397. Heaven in itself is so full of delights that viewed in itself it is nothing else than blessedness and delight; for the Divine good that flows forth from the Lord's Divine love is what makes heaven in general and in particular with everyone there, and the Divine love is a longing for the salvation of all and the happiness of all from inmosts and in fullness. Thus whether you say heaven or heavenly joy it is the same thing. 398. The delights of heaven are both ineffable and innumerable; but he that is in the mere delight of the body or of the flesh can have no knowledge of or belief in a single one of these innumerable delights; for his interiors, as has just been said, look away from heaven towards the world, thus backwards. For he that is wholly in the delight of the body or of the flesh, or what is the same, in the love of self and of the world, has no sense of delight except in honor, in gain, and in the pleasures of the body and the senses; and these so extinguish and suffocate the interior delights that belong to heaven as to destroy all belief in them; consequently he would be greatly astonished if he were told that when the delights of honor and of gain are set aside other delights are given, and still more if he were told that the delights of heaven that take the place of these are innumerable, and are such as cannot be compared with the delights of the body and the flesh, which are chiefly the delights of honor and of gain. All this makes clear why it is not known what heavenly joy is.