There is a much more exact correspondence between the natural and moral world than we are apt to take notice of. The inward frame of man does in a peculiar manner answer to the external condition and circumstances of life in which he is placed. This is a particular instance of that general observation of the Son of Sirach: _All things are double one against another_, _and God hath made nothing imperfect_. {15} The several passions and affections in the heart of man, compared with the circumstances of life in which he is placed, afford, to such as will attend to them, as certain instances of final causes, as any whatever, which are more commonly alleged for such: since those affections lead him to a certain determinate course of action suitable to those circumstances; as (for instance) compassion to relieve the distressed. And as all observations of final causes, drawn from the principles of action in the heart of man, compared with the condition he is placed in, serve all the good uses which instances of final causes in the material world about us do; and both these are equally proofs of wisdom and design in the Author of nature: so the former serve to further good purposes; they show us what course of life we are made for, what is our duty, and in a peculiar manner enforce upon us the practice of it. Suppose we are capable of happiness and of misery in degrees equally intense and extreme, yet, we are capable of the latter for a much longer time, beyond all comparison. We see men in the tortures of pain for hours, days, and, excepting the short suspensions of sleep, for months together, without intermission, to which no enjoyments of life do, in degree and continuance, bear any sort of proportion. And such is our make and that of the world about us that any thing may become the instrument of pain and sorrow to us. Thus almost any one man is capable of doing mischief to any other, though he may not be capable of doing him good; and if he be capable of doing him some good, he is capable of doing him more evil. And it is, in numberless cases, much more in our power to lessen the miseries of others than to promote their positive happiness, any otherwise than as the former often includes the latter; ease from misery occasioning for some time the greatest positive enjoyment. This constitution of nature, namely, that it is so munch more in our power to occasion and likewise to lessen misery than to promote positive happiness, plainly required a particular affection to hinder us from abusing, and to incline us to make a right use of the former powers, _i.e._, the powers both to occasion and to lessen misery; over and above what was necessary to induce us to make a right use of the latter power, that of promoting positive happiness. The power we have over the misery of our fellow-creatures, to occasion or lessen it, being a more important trust than the power we have of promoting their positive happiness; the