Of the association of mechanism with the teleological principle in the explanation of a natural purpose as a natural product

According to the preceding paragraphs the mechanism of nature alone does not enable us to think the possibility of an organised being; but (at least according to the constitution of our cognitive faculty) it must be originally subordinated to a cause working designedly.

But, just as little is the mere teleological ground of such a being sufficient for considering it and judging it as a product of nature, if the mechanism of the latter be not associated with the former, like the instrument of a cause working designedly, to whose purposes nature is subordinated in its mechanical laws. The possibility of such a unification of two quite different kinds of causality, —