The existence or non-existence of these advantages, and the power of determining this, or the judgment of beauty, are therefore of transcendent importance to individuals and to families. Such judgment can be attained by analysis and classification alone. Nothing, therefore, can more nearly affect all human interests than that analysis and classification of beauty which are here proposed. To place beyond a doubt, and to illustrate more minutely, the extraordinary importance of this subject, as regards advantages real to the species, I may anticipate some of the more minute applications of my doctrine. If, in the locomotive system of the female, much of the delicacy of form, and the ease and grace of her movements, depend upon the more perfect development of the muscles of the pelvis, and its easily adapting itself to great and remarkable changes, how important must be the ability to determine, even by walk or gesture, the existence of this condition! If, in the vital system, the elasticity and freshness of the skin are the characteristics of health, and their absence warns us that the condition of woman is unfavorable to the plan of nature relatively to the maintenance of the species--or, if the capacity of the pelvis, and the consequent breadth of the haunches, are necessary to all those functions which are most essentially feminine, impregnation, gestation, and parturition, without danger either to parent or to child--of what extreme importance must be the ability to determine this with certainty and ease! If, in the mental system, the capacity and delicacy of the organs of sense, and the softness and mobility of the nervous system, are necessary to the vivid and varying sensibility of woman--if it is in consequence of this, that woman is enabled to act on man by the continual observation of all that can captivate his imagination or secure his affection, and by the irresistible seduction of her manners--if it is these qualities which enable her to accommodate herself to his taste, to yield, without constraint, even to the caprice of the moment, and to seize the time when observations, made as it were accidentally, may produce the effect which she desires--if it is by these means that she fulfils her first duty, namely, to please him to whom she has united her days, and to attach him to her and to home by rendering both delightful--if all this is the case, of what inexpressible importance must be the ability to determine, in each individual, the possession of the power and the will to produce such effects!