227. (18) Married partners bring with them various similarities and various dissimilarities, both internal and external. People know that there are similarities between married partners and dissimilarities; also that the outward ones are discernible, whereas the inner ones do not appear except to the partners themselves after they have lived together for some time, and to others through certain indications. It is not worth the effort to enumerate these for a conception of them, however, as one can fill many pages recounting and describing their various types. Some instances of similarity may be inferred and deduced in part from the dissimilarities considered in the next chapter,* on whose account conjugial love passes away into coldness. Similarities and dissimilarities arise in general from people's native inclinations, varied by their upbringing, associations, and acquired persuasions. * See "Reasons in Marriage for Cold States, Separations and Divorces," nos. 234ff.