259. XXIII. THAT OF THE ACCIDENTAL CAUSES OF COLD, THE FOURTH IS THE MAN'S THOUGHT OF THE WIFE DAY AND NIGHT,THAT SHE IS DESIROUS; AND ON THE OTHER HAND, THE WIFE'S THOUGHT OF THE MAN, THAT HE IS NOT WILLING. That this is a cause of cessation of love with wives, and that it is a cause of cold with men, is passed by without comment; for it is among the things well known to husbands who study the arcana of conjugial love, that if a man at the sight of his wife by day, or by her side at night, thinks of her that she desires or wishes, he is chilled to the extreme; and on the other hand, that if a wife thinks of the man that he is able and not willing, she loses her love. The above is adduced here to the end that this work may be perfected and [its first Part], The Delights of Wisdom from Conjugial Love, be comprehensive.