When rich food is brought down by ingredients of a plainer taste, the composition is susceptible of a specific habit. Thus the sweet taste of sugar, rendered less poignant in a mixture, may, in course of time, produce a specific habit for such mixture. As moderate pleasures, by becoming more intense, tend to generic habits; so intense pleasures, by becoming more moderate, tend to specific habits.
The beauty of the human figure, by a special recommendation of nature, appears to us supreme, amid the great variety of beauteous forms bestowed upon animals. The various degrees in which individuals enjoy this property, render it an object sometimes of a moderate sometimes of an intense passion. The moderate passion, admitting frequent reiteration without diminution, and occupying the mind without exhausting it, becomes gradually stronger till it settle in a habit. So true this is, that instances are not wanting, of an ugly face, at first disagreeable, afterward rendered indifferent by familiarity, and at the longrun agreeable. On the other hand, consummate beauty, at the very first view, fills the mind so as to admit no increase. Enjoyment in this case lessens the pleasure[29]; and if often repeated, ends commonly in satiety and disgust. Constant experience shows, that the emotions created by great beauty become weaker by familiarity. The impressions made successively by such an object, strong at first and lessening by degrees, constitute a series opposite to that of the weak and increasing emotions, which grow into a specific habit. But the mind, when accustomed to beauty, contracts a relish for it in general, though often repelled from particular objects by the pain of satiety. Thus a generic habit is formed, of which inconstancy in love is the necessary consequence. For a generic habit, comprehending every beautiful object, is an invincible obstruction to a specific habit, which is confined to one.
But a matter which is of great importance to the youth of both sexes, deserves more than a cursory view. Though the pleasant emotion of beauty differs widely from the corporeal appetite, yet both may concur upon the same object. When this is the case, they inflame the imagination; and produce a very strong complex passion[30], which is incapable of increase, because the mind as to pleasure is limited rather more than as to pain. Enjoyment in this case must be exquisite, and therefore more apt to produce satiety than in any other case whatever. This is a never-failing effect, where consummate beauty on the one side, meets with a warm imagination and great sensibility on the other. What I am here explaining, is the naked truth without exaggeration. They must be insensible upon whom this doctrine makes no impression; and it deserves well to be pondered by the young and the amorous, who in forming a society which is not dissolvable, are too often blindly impelled by the animal pleasure merely, inflamed by beauty. It may indeed happen after this pleasure is gone, and go it must with a swift pace, that a new connection is formed upon more dignified and more lasting principles. But this is a dangerous experiment. For even supposing good sense, good temper, and internal merit of every sort, which is a very favourable supposition, yet a new connection upon these qualifications is rarely formed. It generally or rather always happens, that such qualifications, the only solid foundation of an indissoluble connection, are rendered altogether invisible by satiety of enjoyment creating disgust.