424. That a man can think from the understanding and not at the same time from the will is provided in order that man may be capable of being reformed. For man is reformed by means of truths, and truths pertain to the understanding, as has been said. For as to his will man is born into every evil, and therefore from himself wills good to no one but himself; and he who wills good to himself alone delights in the misfortunes which happen to others, especially when they tend to his own advantage; for his wish is to divert to himself the goods of all others, whether honours or riches, and so far as he succeeds in this he inwardly rejoices. In order that this will may be corrected and reformed, it is granted to a man to be able to understand truths, and to subdue by means of these truths the affections of evil that spring from the will. This is why man can think truths from his understanding, and also speak them and do them. But until man is such that he wills truths and does them from himself, that is, from the heart, he is not able to think truths from his will. When he becomes such whatever things he thinks from his understanding belong to his faith, and whatever things he thinks from his will belong to his love. In consequence, faith and love, like understanding and will, are conjoined with him.