At the end of the last and the beginning of the present century, a new way of thinking grew up. Jurists began to think in terms of human wants or desires rather than of human wills. They began to think that what they had to do was not simply to equalize or harmonize wills, but, if not to equalize, at least to harmonize the satisfaction of wants. They began to weigh or balance and reconcile claims or wants or desires, as formerly they had balanced or reconciled wills. They began to think of the end of law not as a maximum of self-assertion, but as a maximum satisfaction of wants. Hence for a time they thought of the problem of ethics, of jurisprudence, and of politics as chiefly one of valuing; as a problem of finding criteria of the relative value of interests. In jurisprudence and politics they saw that we must add practical problems of the possibility of making interests effective through governmental action, judicial or administrative. But the first question was one of the wants to be recognized--of the interests to be recognized and secured. Having inventoried the wants or claims or interests which are asserting and for which legal security is sought, we were to value them, select those to be recognized, determine the limits within which they were to be given effect in view of other recognized interests, and ascertain how far we might give them effect by law in view of the inherent limitations upon effective legal action. This mode of thinking may be seen, concealed under different terminologies, in more than one type of jurist in the last three decades.