[199] The moral necessity of prohibiting polygamy is sometimes put forward as an immediate inference from the equality of the numbers of the two sexes. This argument, however, seems to require the assumption that all men and women ought to marry: but this scarcely any one will expressly affirm: and actually considerable numbers remain unmarried, and there is no reason to believe that in countries where polygamy is allowed, paucity of supply has ever made it practically difficult for any man to find a mate.
[200] Cf. Wayland, _Elements of Moral Science_, Book ii. part ii. class 2, § 2.
[201] I use the term here to imply a mutual affection more intense than the kindly feeling which a moral man desires to find towards all persons with whom he is brought into continual social relations, through business or otherwise.
[202] It was before observed that this is only one--and not always the most prominent--element of the whole emotional state which we call love.
§ 1. We have seen that in delineating the outline of duty, as intuitively recognised, we have to attempt to give to common terms a definite and precise meaning. This process of definition always requires some reflection and care, and is sometimes one of considerable difficulty. But there is no case where the difficulty is greater, or the result more disputed, than when we try to define Justice.
Before making the attempt, it may be as well to remind the reader what it is that we have to do. We have not to inquire into the derivation of the notion of Justice, as we are not now studying the history of our ethical thought, but its actual condition. Nor can we profess to furnish a definition which will correspond to every part of the common usage of the term; for many persons are undoubtedly vague and loose in their application of current moral notions. But it is an assumption of the Intuitional method[204] that the term ‘justice’ denotes a quality which it is ultimately desirable to realise in the conduct and social relations of men; and that a definition may be given of this which will be accepted by all competent judges as presenting, in a clear and explicit form, what they have always meant by the term, though perhaps implicitly and vaguely. In seeking such a definition we may, so to speak, clip the ragged edge of common usage, but we must not make excision of any considerable portion.[205]