In the feudal social order reciprocal duties involved in relations established by tradition and taken to rest on authority were the significant legal institutions. With the gradual disintegration of this order and the growing importance of the individual in a society engaged in discovery, colonization and trade, to secure the claims of individuals to assert themselves freely in the new fields of human activity which were opening on every side became a more pressing social want than to maintain the social institutions by which the system of reciprocal duties was enforced and the relations involving those duties were preserved. Men did not so much desire that others perform for them the duties owing in some relation, as that others keep hands off while they achieved what they might for themselves in a world that continually afforded new opportunities to the active and the daring. The demand was no longer that men be kept in their appointed grooves. Friction and waste were apprehended, not from men getting out of these grooves, but from attempts to hold them there by means devised to meet the needs of a different social order whereby they were made to chafe under arbitrary restraint and their powers were not utilized in the discovery and exploitation of the resources of nature, to which human powers were to be devoted in the succeeding centuries. Accordingly the end of law comes to be conceived as a making possible of the maximum of individual free self-assertion. Transition to the newer way of thinking may be seen in the Spanish jurist-theologians of the sixteenth century. Their juristic theory was one of natural limits of activity in the relations of individuals with each other, that is, of limits to human action which expressed the rational ideal of man as a moral creature and were imposed upon men by reason. This theory differs significantly from the idea of antiquity, although it goes by the old name. The Greeks thought of a system of limiting men's activities in order that each might be kept in the place for which he was best fitted by nature--the place in which he might realize an ideal form of his capacities--and thus to preserve the social order as it stands or as it shall stand after a rearrangement. The sixteenth-century jurists of the Counter-Reformation held that men's activities were naturally limited, and hence that positive law might and should limit them in the interest of other men's activities, because all men have freedom of will and ability to direct themselves to conscious ends. Where Aristotle thought of inequalities arising from the different worth of individual men and their different capacities for the things which the social order called for, these jurists thought of a natural (i.e., ideal) equality, involved in the like freedom of will and the like power of conscious employment of one's faculties inherent in all men. Hence law did not exist to maintain the social _status quo_ with all