259. (xxiii) The fourth accidental reason for coldness is when the husband thinks day and night about his wife being willing, and conversely when the wife thinks about her husband being unwilling.
The second is a reason for the cessation of love among wives, and the first is a reason for coldness among men; these statements require no comment. A man who, on seeing his wife by day or lying by her side at night, thinks of her as desiring or being willing, experiences extreme coldness; and on the other hand a wife, who thinks of her husband as being able but unwilling, loses her love. These facts are well known to husbands who take an interest in the secrets of conjugial love. These facts are also reported so as to make this work complete, and to make a full list of the delights of wisdom concerning conjugial love.