The reasons are assigned above, why the causes of intense pleasure become not readily habitual. But now I must observe, that these reasons conclude only against specific habits. With regard to any particular object that is the cause of a weak pleasure, a habit is formed by frequency and uniformity of reiteration, which in the case of an intense pleasure cannot obtain without satiety and disgust. But it is remarkable, that satiety and disgust have no effect, except as to that thing which occasions them. A surfeit of honey produceth not a loathing of sugar; and intemperance with one woman, produceth no disrelish of the same pleasure with others. Hence it is easy to account for a generic habit in any strong pleasure. The disgust of intemperance, is confined to the object by which it is produced. The delight we had in the gratification of the appetite, inflames the imagination, and makes us, with avidity, search for the same gratification in whatever other object it can be found. And thus frequency and uniformity in gratifying the same passion upon different objects, produceth at the longrun a habit. In this manner, a man acquires an habitual delight in high and poignant sauces, rich dress, fine equipage, crowds of company, and in whatever is commonly termed _pleasure_. There concurs at the same time to introduce this habit, a peculiarity observed above, that reiteration of acts enlarges the capacity of the mind, to admit a more plentiful gratification than originally, with regard to frequency as well as quantity. Hence it appears, that though a specific habit can only take place in the case of a moderate pleasure, yet that a generic habit may be formed with respect to every sort of pleasure, moderate or immoderate, that can be gratified by a variety of objects indifferently. The only difference is, that any particular object which causes a weak pleasure, runs naturally into a specific habit; whereas a particular object that causes an intense pleasure, is altogether incapable of such a habit. In a word, it is but in singular cases that a moderate pleasure produces a generic habit: an intense pleasure, on the other hand, cannot produce any other habit. The appetites that respect the preservation and propagation of the species, are formed into habit in a peculiar manner. The time as well as measure of their gratification, are much under the power of custom; which, by introducing a change upon the body, occasions a proportional change in the appetites. Thus, if the body be gradually formed to a certain quantity of food at regular times, the appetite is regulated accordingly; and the appetite is again changed when a different habit of body is introduced by a different practice. Here it would seem, that the change is not made upon the mind, which is commonly the case in passive habits, but only upon the body.