If the evolution of the earth and the heavenly bodies from a nebula destroy neither the relevancy nor the force of the design argument, the development of complex organisms from simple ones, and the descent of all the plants and animals on earth from a very few living cells or forms, will not remove or lessen the necessity for supposing an intelligence to have designed all the organisms, simple and complex alike, and to have foreordained, arranged, and presided over the course of their development. Were it even proved that life and organisation had been evolved out of dead and inorganic matter, the necessity of believing in such an intelligence would still remain. Nothing of the kind has yet been proved. On the contrary, scientific experimentation has all tended to show that life proceeds only from life. But had it been otherwise--had this break and blank in the development theory been filled up--matter would only have been proved to be more wonderful than it had been supposed to be. The scientific confirmation of the hypothesis of what is called spontaneous generation would not relieve the mind from the necessity of referring the potency of life and all else that is wonderful in matter either to design or chance, reason or unreason--it would not free it from the dilemma which had previously presented itself.[32] [32] See Appendix XXIII. The development of higher from lower organisms, of course, still less frees us from the obligation to believe that a supreme intelligence presides over the development. Development is not itself a cause, but a process,--it is a something which must have a cause; and the only kinds of development which have yet been shown to be exemplified in the organic world demand intelligence as their ultimate cause. I do not know that I can better prove that there is no opposition between development and design than by referring to an illustration which Professor Huxley made use of with a directly contrary view. To show that the argument from final causes, or what is often called the theological argument, had, as commonly stated, received its death-blow from Mr Darwin, he wrote as follows: "The theological argument runs thus--an organ or organism (A) is precisely fitted to perform a function or purpose (B); therefore it was specially constructed to perform that purpose. In Paley's famous illustration, the adaptation of all the parts of the watch to the function or purpose of showing the time, is held to be evidence that the watch was specially contrived to that end, on the ground that the only cause we know of competent to produce such an effect as a watch which shall keep time is a contriving intelligence, adapting the means directly to that end. Suppose, however, that any one had been able to show that the watch had not been made directly by any person, but that it was the result of the modification of another watch which kept time but poorly, and that this, again, had proceeded from a structure which could hardly