parts brought together and any how united: neither will he yet, be the union ever so close, have an idea which will bear any resemblance to that of a watch. But let him view those several parts put together, or consider them as to be put together in the manner of a watch; let him form a notion of the relations which those several parts have to each other—all conducive, in their respective ways, to this purpose, showing the hour of the day; and then he has the idea of a watch. Thus it is with regard to the inward frame of man. Appetites, passions, affections, and the principle of affection, considered merely as the several parts of our inward nature, do not at all give us an idea of the system or constitution of this nature: because the constitution is formed by somewhat not yet taken into consideration, namely, by the relations which these several parts have to each other; the chief of which is the authority of reflection or conscience. It is from considering the relations which the several appetites and passions in the inward frame have to each other, and, above all, the supremacy of reflection or conscience, that we get the idea of the system or constitution of human nature. And from the idea itself it will as fully appear, that this our nature, i.e., constitution, is adapted to virtue, as from the idea of a watch it appears, that its nature, i.e., constitution or system, is adapted to measure time. What in fact or event commonly happens, is nothing to this question. Every work of art is apt to be out of order; but this is so far from being according to its system, that let the disorder increase, and it will totally destroy it. This is merely by way of explanation, what an economy, system, or constitution is. And thus far the cases are perfectly parallel. If we go further, there is indeed a difference, nothing to the present purpose, but too important an one ever to be omitted. A machine is inanimate and passive: but we are agents. Our constitution is put in our power; we are charged with it, and therefore are accountable for any disorder or violation of it.
Thus nothing can possibly be more contrary to nature than vice; meaning by nature, not only the several parts of our internal frame, but also the constitution of it. Poverty and disgrace, tortures and death, are not so contrary to it. Misery and injustice are indeed equally contrary to some different parts of our nature, taken singly: but injustice is moreover contrary to the whole constitution of the nature.
