In the second place, it has been argued with much apparent plausibility, by Dr. Paley, that wherever we find a complicated organic structure, adapted to produce beneficial results, its origin must be sought beyond itself; and since the world abounds with such organisms, it cannot be eternal; that is, the mere existence of animals and plants proves their non-eternity. Now, without asserting that there is no force in this argument, I have two remarks to make upon it. The first is, to quote the reply to it, which such a writer as David Hume has given, in language which I have just repeated. "For aught we can know _a priori_," says he, "matter may contain the source or spring of order originally within itself, as well as mind does; and there is no more difficulty in conceiving that the several elements, from an internal unknown cause, may fall into the most exquisite arrangement, than to conceive that their ideas in the great universal mind, from a like internal unknown cause, fall into that arrangement. To say that the different ideas, which compose the reason of the Supreme, fall into order of themselves, and by their own nature, is really to talk without any precise meaning. If it has a meaning, I would fain know why it is not as good sense to say, that the parts of the material world fall into order of themselves and by their own nature. Can the one opinion be intelligible while the other is not so?" Fairly to meet this reasoning of the prince of sceptics is not an achievement of dulness or ignorance. In order to do it triumphantly, we want, what Dr. Paley could not find, a distinct example of the creation of numerous organic beings by some cause independent of themselves. I say, he could not find such an example; for on a question of natural theology, he did not think it proper to appeal to the Bible; nor had geology, when he wrote, revealed her astonishing record on this subject. But as it is now developed, it puts an end to all controversy as to the origin of the organic world. My second remark, however, on this argument is, that even admitting its correctness, it only proves the commencement of organic natures, but does not show that the matter of which they are composed may not have been eternal.