Selections from Arcana Cœlestia ~ Emanuel Swedenborg
What a man knows and understands to be so, he calls truth; and what he does from will, thus what he wills, he calls good. These two faculties [will and understanding] should constitute a one.This may be illustrated by comparison with the sight of the eye, and with the pleasantness and delight that are experienced by means of this sight. When the eye sees objects, it experiences a pleasantness and delight from them in accordance with their forms, colors, and their consequent beauties both in general and in their parts; in a word, in accordance with the order or dispositions into series. This pleasantness and delight are not of the eye, but of the animus and its affection; and insofar as the man is affected with them, so far he sees them and retains them in memory, while the things that the eye sees from no affection, are passed over and are not implanted in the memory, thus are not conjoined with it.
From this it is evident that the objects of the external sight are implanted in accordance with the pleasantness and delight of the affections; and that they are in this pleasantness and delight; for when a similar pleasantness or delight recurs, such objects also recur; and in like manner when similar objects recur, such pleasantness and delight also recur, with variety according to the states. It is the same with the understanding, which is the internal sight - its objects are spiritual, and are called truths; the field of these objects is the memory; the pleasantness and delight of this sight is good; and thus good is that in which truths are inseminated and implanted....
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The man who is born within the church, from earliest childhood learns from the Word and from the doctrinal things of the church what the truth of faith is, and also what the good of charity is. But when he grows up to manhood he begins either to confirm or to deny in himself the truths of faith that he has learned
for he then looks at these truths with his own sight, and thereby causes them either to be made his own or else to be rejectedfor nothing can become one's own that is not acknowledged of one's own insight, that is, which the man does not know to be so from himself, and not from somebody else; and therefore the truths learned from childhood enter no further into the man's life than the first entrance, from which they can either be admitted more interiorly, or else be cast out.
(from Arcana Cœlestia 4301:3,4; also no. 5376:1)