493. XIII. THAT ADULTERIES COMMITTED BY THESE ARE GRIEVOUS IN THE HIGHEST DEGREE, AND ARE IMPUTED TO THEM AS EVILS OF PURPOSE AND INSEATED WITHIN THEM AS GUILT. That they are grievous in the highest degree, and more grievous than the former, is because in them the will takes the lead, while in the former it is the understanding; and man's life is essentially the life of his will, and formally that of his understanding. The reason is because the will acts as one with the love. Love is the essence of man's life, and it forms itself in the understanding by such things as are accordant with it. Therefore, regarded in itself, the understanding is nothing else than the form of the will. And because love pertains to the will, and wisdom to the understanding, wisdom is nothing else than the form of love. In like manner, truth is nothing else than the form of good. That which flows forth from the essence of man's life, thus from his will or love, is principally called purpose, while that which flows forth from the form of his life, thus from his understanding and its thought, is called intention. Moreover, guilt is principally predicated of the will. Hence it is said that every one has the guilt of evil by inheritance, but evil itself is from the man. Therefore adulteries of the fourth degree are imputed as evils of purpose and are inseated within the adulterer as guilt.