That within the good of love which flows in from the Lord through angels is all truth, which truth would become manifest of itself if man lived in love to the Lord and in love toward the neighbor, is evident not only from the things that take place in heaven, but also from those which take place in lower nature; and from the latter, because they are in plain sight, I may draw some illustrations.
Brute animals are impelled to action in no other way than by means of the loves and the affections of these into which they have been created and afterward born; for every animal is carried whither his affection and love draw it; and this being so, they are also in all matters of knowledge that ever belong to their love; for they know from a love resembling conjugial love how to come together, cattle after their kind, and birds after their kind; birds know how to build their nests, lay their eggs, brood upon them, hatch their young, and how to feed them, and this without any instruction, merely from the love which resembles conjugial love, and from love toward their offspring, which loves have implanted in them all these matters of knowledge. In like manner they know what things to eat for food, and how to seek them. And, what is more wonderful, bees know how to seek their food from flowers of various kinds, and also to gather the wax with which they make their cells, wherein first they deposit their offspring, and then store up food; they also know how to provide for the winter; not to mention very many other things. All these matters of knowledge are included in their loves, and dwell there from their earliest origin. Into these they are born, because they are in the order of their nature into which they were created; and thereafter they are moved by a general influx from the spiritual world.
If man were in the order into which he was created, namely, in love toward the neighbor, and in love to the Lord (for these loves are proper to man), he above all animals would be born not only into matters of knowledge, but also into all spiritual truths and celestial goods, and thus into all wisdom and intelligence; for he is able to think of the Lord, and to be conjoined with Him through love, and thus to be elevated to what is Divine and eternal, which is not possible to brute animals. Thus in the supposed case man would be directed by no other than general influx from the Lord through the spiritual world. But as he is not born into order, but contrary to his order, he is therefore born into ignorance of all things; and for this reason it has been provided that he may afterward be reborn, and thus come into as much of intelligence and wisdom as he receives of good, and of truth through good, in freedom.