Nor, again, is there agreement as to the external duties arising out of the relationship. For all would lay down conjugal fidelity, and mutual assistance (according to the customary division of labour between men and women--unless this should be modified by mutual agreement). But beyond this we find divergence: for some state that “the marriage contract binds each party, whenever individual gratification is concerned, to prefer the happiness of the other party to its own[200]”: while others would say that this degree of unselfishness is certainly admirable, but as a mere matter of duty it is enough if each considers the other’s happiness equally with his (or her) own. And as to the powers and liberties that ought to be allowed to the wife, and the obedience due from her to the husband--I need scarcely at the present time (1874) waste space in proving that there is no _consensus_ of moral opinion. § 7. The conjugal relation is, in its origin, of free choice, but when it has once been formed, the duties of affection that arise out of it are commonly thought to be analogous to those arising out of relations of consanguinity. It therefore holds an intermediate position between these latter, and ordinary friendships, partnerships, and associations, which men are equally free to make and to dissolve. Now most associations that men form are for certain definite ends, determined by express contract or tacit understanding: accordingly the duty arising out of them is merely that of fidelity to such contract or understanding, which will be considered later under the heads of Justice and Good Faith. But this does not seem to be the case with what in a strict sense of the term are called Friendships[201]: for although Friendship frequently arises among persons associated for other ends, yet the relation is always conceived to have its end in itself, and to be formed primarily for the development of mutual affection between the friends, and the pleasure which attends this. Still, it is thought that when such an affection has once been formed it creates mutual duties which did not previously exist: we have therefore to inquire how far this is the case, and on what principles these can be determined.