Selection from Arcana Cœlestia ~ Emanuel Swedenborg
They who are in the affection of truth have little truth in comparison with those who are in the affection of good, this is evident from the fact that it is from the meager and obscure good appertaining to them that they regard truth.The truth in a man is exactly according to the good that is in him.Where there is little good, there is little truth. They are in a like ratio and in a like degree, or, as we say, they march with even step. This indeed may seem a paradox, but still the case is so.
Good is the very essence of truth, and truth without its essence is not truth, although it appears as if it were; it is merely a sounding brass, and is like an empty vessel.In order that anyone may have truth in himself, he must not only know it, but also acknowledge it, and have faith in it; he then for the first time has truth, because it then affects him, and remains. It is otherwise when he only knows truth, and does not acknowledge it, and have faith in it; for in this case he has not the truth in himself. This is the case with many who are in evil: they are able to know truths, sometimes more than other men; but still they have not the truth; nay, they have it so much the less, because at heart they deny it.
(Arcana Cœlestia 2429:2, 3)