In its simple form the belief in luck is this instinctive sense of an inscrutable teleological propensity in objects or situations. Objects or events have a propensity to eventuate in a given end, whether this end or objective point of the sequence is conceived to be fortuitously given or deliberately sought. From this simple animism the belief shades off by insensible gradations into the second, derivative form or phase above referred to, which is a more or less articulate belief in an inscrutable preternatural agency. The preternatural agency works through the visible objects with which it is associated, but is not identified with these objects in point of individuality. The use of the term "preternatural agency" here carries no further implication as to the nature of the agency spoken of as preternatural. This is only a farther development of animistic belief. The preternatural agency is not necessarily conceived to be a personal agent in the full sense, but it is an agency which partakes of the attributes of personality to the extent of somewhat arbitrarily influencing the outcome of any enterprise, and especially of any contest. The pervading belief in the hamingia or gipta (gaefa, authna) which lends so much of color to the Icelandic sagas specifically, and to early Germanic folk-legends, is an illustration of this sense of an extra-physical propensity in the course of events. In this expression or form of the belief the propensity is scarcely personified although to a varying extent an individuality is imputed to it; and this individuated propensity is sometimes conceived to yield to circumstances, commonly to circumstances of a spiritual or preternatural character. A well-known and striking exemplification of the belief--in a fairly advanced stage of differentiation and involving an anthropomorphic personification of the preternatural agent appealed to--is afforded by the wager of battle. Here the preternatural agent was conceived to act on request as umpire, and to shape the outcome of the contest in accordance with some stipulated ground of decision, such as the equity or legality of the respective contestants' claims. The like sense of an inscrutable but spiritually necessary tendency in events is still traceable as an obscure element in current popular belief, as shown, for instance, by the well-accredited maxim, "Thrice is he armed who knows his quarrel just,"--a maxim which retains much of its significance for the average unreflecting person even in the civilized communities of today. The modern reminiscence of the belief in the hamingia, or in the guidance of an unseen hand, which is traceable in the acceptance of this maxim is faint and perhaps uncertain; and it seems in any case to be blended with other psychological moments that are not clearly of an animistic character.