However this may be, there is a large consensus of opinion that the dance in its origin was sacred, and that every other subsequent form of dance was ultimately derived from this. It is true to say that “the ritual or worship dance is the source of all others[4].” One of the earliest modern writers on the subject, de Cahusac, likewise says: “Aussi la danse sacrée est-elle la plus ancienne, et la source dans laquelle on a puisé dans les suites toutes les autres[5].” This point is particularly emphasized because it is only the dance in its _sacred_ aspect that will be dealt with in the following pages. II As soon as one attempts to define what dancing in its essence is one realizes the difficulty of doing so. It can be defined in such a number of ways, all of which contain elements of truth; so much depends upon the point of view taken in regard to it. The recording of a number of definitions would be wearisome, Voss alone gives dozens by different people[6]. But one thing which these various definitions teach must be noted and insisted upon: they show that the term “dancing” connotes a great deal more than is attached to it now-a-days. When, for example, de Cahusac rightly defines dancing as “l’art des gestes[7],” it is obvious that these cannot be restricted to the feet or legs. A number of the Egyptian inscriptions make it clear that the arms played as important a part in the dance as the legs; representations of it on Greek pottery show that the motions of the head, and even more of the whole body, are necessary parts in the movements of the dance; among some savages the sacred dance is performed while the legs are more or less still, but the arms and the body are constantly in motion. To make but one reference to modern dancing: in some of the figures of the quadrille the dancers simply advance and recede, and at times they are stationary, merely bowing; yet this all belongs to the dance, and comes under the category of dancing. Crawley truly says that “dancing is an instinctive mode of muscular expression of feeling[8].” If, then, the feelings are restrained the muscular expression may take the form of a staid procession, as seems to be characteristic of the Assyrian sacred dance. We must, therefore, include under the many forms of the sacred dance such as range from a formal procession, stately and measured, to those of the wild orgy in the Dionysiac ritual. As we shall see, the _intention_ which prompts the dance will have a great deal to do with its external form; a fact which gives point to Giraudet’s phrase that “la danse a été l’expression d’un état d’âme[9].”