19. No one who is in evil, and thence in falsity from confirmation and life, can know what good and truth is, for he believes his own evil to be good, and thence he believes his falsity to be truth; but everyone who is in good and thence in truth from confirmation and life may know what evil and falsity are. The reason of this is, because all good and its truth is, in its essence, heavenly, and what is not heavenly in its essence is still from a heavenly origin; but all evil and its falsity is in its essence infernal, and what is not infernal in its essence has nevertheless its origin from thence; and all that is heavenly is in light, but all that is infernal is in darkness.