It is obvious, as I have indicated, that a point of rest and comparison is necessary only when the objects and interests are many and more or less conflicting; but the principle is sometimes at play in forms and works in which we should scarcely have expected to find it. An armlet, or even a finger-ring, gives every portion of the nude figure an increase of animation, unity, and repose. The artistic justification of the unmeaning “burthen” of many an old ballad may probably be found, at least in part, in the same principle; as may also be that of the trick--as old as poetry--of occasionally repeating a line or phrase without any apparent purpose in the repetition. Of course the “point of rest” will not create harmony where--as in most modern works--its elements are absent; but, where harmony exists, it will be strangely brought out and accentuated by this in itself often trifling, and sometimes, perhaps, even accidental accessory. VII IMAGINATION There are things which can never be more than approximately defined, and which, even when so defined, are only to be rightly understood in proportion to the degrees in which they are possessed by those who would attempt to comprehend them. Such are, for example, “imagination” and “genius”; which, being faculties that are possessed in a very low degree by nearly all and in a very high degree by extremely few, are matters of the most general interest and the most variable apprehension. That such faculties should, however, as far as possible, be understood is of great practical importance to all persons; inasmuch as it greatly concerns all to know something of the signs, sanctions, and claims of those powers by which they are inevitably more or less ruled, externally and internally.