This tendency is moreover liable to be largely reinforced--or at least complicated--by the other factors to which we referred above. The second of these sources of difficulty (the one which is indeed most intimately connected with our present line of thought) lies in the fact that the child-in-law himself is frequently unable to regard his parents-in-law with impartial eyes, but transfers to them some of the feelings of love or of hatred which he originally directed towards his own parents. This is perhaps most often and most openly manifest in the case of hostile emotions; men or women expressing relatively freely towards a father-in-law or mother-in-law respectively those feelings of hatred which they had felt (but had perhaps repressed) with reference to the corresponding parents by blood. The natural identification of their parents-in-law with their own parents, in virtue of which this displacement of affect is enabled to take place, is often facilitated by the operation of the factor we have already considered--a parent fixation in the case of the other partner to the marriage. Where such a fixation exists, a father-in-law or mother-in-law may be felt to be in some sort a sexual rival, in very much the same way as was at one time the original parent (p. 17). Thus (to return to the example that we just now used) a husband may feel that his father-in-law unduly influences his wife and absorbs much of her affection and interest to the detriment of that devoted to himself: this recalls the earlier situation in which a similar rival--his own father--exercised a similar influence over the then object of his affection, his own mother; and as a result of an unconscious identification of the new situation with the old, the hostile feeling originally directed towards his own father may be re-awakened and transferred to the father-in-law. In this way the feeling of enmity directed towards the latter may be more intense than that which would be really appropriate to the situation. Any recently aroused (and perhaps to some extent legitimate) feeling of annoyance is reinforced by the emotions set free by the stirring up of the still powerful parent complexes of infancy and childhood. [Sidenote: Love]