the bent of his nature, leading him to gratify his appetite: there is an entire correspondence between his whole nature and such an action: such action therefore is natural. But suppose a man, foreseeing the same danger of certain ruin, should rush into it for the sake of a present gratification; he in this instance would follow his strongest desire, as did the brute creature, but there would be as manifest a disproportion between the nature of man and such an action, as between the meanest work of art and the skill of the greatest master in that art ; which disproportion arises, not from considering the action singly in itself, or in its consequences, but from comparison of it with the nature of the agent. And since such an action is utterly disproportionate to the nature of man, it is in the strictest and most proper sense unnatural; this word expressing that disproportion. Therefore, instead of the words disproportionate to his nature, the word unnatural may now be put; this being more familiar to us: but let it be observed, that it stands for the same thing precisely.
Now, what is it which renders such a rash action unnatural? Is it that he went against the principle of reasonable and cool self-love, considered merely as a part of his nature? No: for if he had acted the contrary way, he would equally have gone against a principle, or part of his nature, namely, passion, or appetite. But to deny a present appetite, from foresight that the gratification of it would end in immediate ruin or extreme misery, is by no means an unnatural action: whereas to contradict or go against cool self-love for the sake of such gratification, is so in the instance before us. Such an action, then, being unnatural, and its being so not arising from a man's going against that principle or desire barely, nor in going against that principle or desire which happens for the present to be strongest; it necessarily follows, that there must be some other difference or distinction to be made between these two principles, passion and cool self-love, than what I have yet
