If a typical "love affair" be examined, it is found that propinquity and a common basis for sympathy in some probably trivial matter lead to the development of the sex instinct; the parental instinct begins to make itself felt, particularly among women; the instincts of curiosity, acquisitiveness, and various others play their part, and there then appears a well-developed case of "love." Such love may satisfy a purely biological definition, but it is incomplete. Love that is worthy of the name must be a function of the will as well as of the emotions. There must be a feeling on the part of each which finds strong satisfaction in service rendered to the other. If the existence of this constituent of love could be more widely recognized and watched for, it would probably prevent many a sensible young man or woman from being stampeded into a marriage of passion, where the real community of interest is slight;[99] and sexual selection would be improved in a way that would count immensely for the future of the race. Moreover, there would be much more real love in the world. Eugenics, as Havelock Ellis has well pointed out,[100] is not plotting against love but against those influences that do violence to love, particularly: (1) reckless yielding to mere momentary desire; and (2) still more fatal influences of wealth and position and worldly convenience which give a factitious value to persons who would never appear attractive partners in life were love and eugenic ideals left to go hand in hand. "The eugenic ideal," Dr. Ellis foresees, "will have to struggle with the criminal and still more resolutely with the rich; it will have few serious quarrels with normal and well-constituted lovers." The point is an important one. To "rationalize" marriage, is out of the question. Marriage must be mainly a matter of the emotions; but it is important that the emotions be exerted in the right direction. The eugenist seeks to remove the obstacles that are now driving the emotions into wrong channels. If the emotions can only be headed in the right direction, then the more emotions the better, for they are the source of energy which are responsible for almost everything that is done in the world. There is in the world plenty of that love which is a matter of mutual service and of emotions unswayed by any petty or sordid influences; but it ought not only to be common, it ought to be universal. It is not likely to be in the present century; but at least, thinking people can consciously adopt an attitude of respect toward love, and consciously abandon as far as possible the attitude of jocular cynicism with which they too often treat it,--an attitude which is reflected so disgustingly in current vaudeville and musical comedy.