144. Neither can anyone be reformed in a state of blindness of the understanding. These also have no knowledge of truths, and consequently of life; for the understanding must teach truths and the will must do them; and when the will does what the understanding teaches its life is fashioned according to truths. But when the understanding is blinded the will is also closed up, and from freedom according to its reason it does only the evil that is confirmed in the understanding, which is falsity. Moreover, the understanding is blinded not only by ignorance but also by religion that teaches blind faith; and also by false doctrine. For as truths open the understanding so falsities close it; they close it from above but open it from below, and the understanding, open only below, cannot see truths but can merely confirm whatever it wills, especially falsity. The understanding is also blinded by the lusts of evil. As long as the will is in these it moves the understanding to confirm them; and so far as the lusts of evil are confirmed it is impossible for the will to be in the affections of good and to see truths from them, and thus to be reformed.
 For example, when one is in the lust of adultery his will, which is in the delight of his love, moves his understanding to confirm it, saying, "What is adultery? Is there anything wicked in it? Is there not the same thing between husband and wife? Cannot children be born from adultery just as from marriage? Cannot a woman admit more than one without harm? What has the spiritual to do with this?" So thinks the understanding which is then the courtesan of the will, and so stupid has it become from debauchery with the will that it cannot see that marriage love is spiritual, heavenly love itself, an image of the love of the Lord and of the Church from which it is derived; and thus that it is in itself holy, that it is chastity itself, purity and innocence; and that it makes men to be forms of love, since consorts can love each other mutually from inmost things and thus form themselves into loves; and that adultery destroys this form and with it the image of the Lord; and what is horrible, that the adulterer mingles his life with the husband's life in his wife, for a man's life is in the seed.
 As this is profane, therefore hell is called adultery, and heaven on the other hand is called marriage. Moreover, the love of adultery communicates with the lowest hell but true marriage love communicates with the inmost heaven; and the organs of generation in both sexes also correspond to societies of the inmost heaven. These things have been recorded that it may be known how blinded the understanding is when the will is in the lust of evil; and that no one can be reformed in a state of blindness of the understanding.