T 2.2.4.9

It may not be amiss, in treating of the affection we bear our acquaintance and relations, to observe some pretty curious phænomena, which attend it. 'Tis easy to remark in common life, that children esteem their relation to their mother to be weaken'd, in a great measure, by her second marriage, and no longer regard her with the same eye, as if she had continu'd in her state of widow-hood. Nor does this happen only, when they have felt any inconveniencies from her second marriage, or when her husband is much her inferior; but even without any of these considerations, and merely because she has become part of another family. This also takes place with regard to the second marriage of a father; but in a much less degree: And 'tis certain the ties of blood are not so much loosen'd in the latter case as by the marriage of a mother. These two phænomena are remarkable in themselves, but much more so when compar'd.