They wished to banish it altogether from the scientific vocabulary, and to substitute for the terms cause and effect, antecedent and consequent, reducing causation to conjunction. But it was generally admitted that, where we have to deal with an invariable antecedent followed by an invariable consequent, nothing was to be gained by a change in the common phraseology. John Stuart Mill refused to abandon the word. Speaking of one who had done so, he said, "I consider him to be entirely wrong." "The beginning of a phenomenon is what implies a Cause."[[1]] There were, he allowed, "permanent causes," but, he added, "we can give no account of the origin of the permanent causes"—which was virtually to abandon the subject as being beyond the domain of science.

In regard to the second question, it very soon became evident that the old views of Design would be subjected to the most incisive criticism. To many it appeared as if the new doctrine of evolution had supplied an explanation which left no room for the recognition of the particular contrivances upon which Paley had constructed his argument. No one asserted this more strongly than Haeckel, the German biologist. To quote his words, "The development of the universe is a monistic mechanical process, in which we discover no aim or purpose whatever; what we call design in the organic world is a special result of biological agencies; neither in the evolution of the heavenly bodies, nor in that of the crust of our earth, do we find any trace of controlling purpose." "Nowhere in the evolution of animals and plants do we find any trace of design, but merely the inevitable outcome of the struggle for existence, the blind controller." "All is the result of chance." We ought to add that he somewhat qualified this last statement by explaining that "chance" itself must be considered as coming under "the universal sovereignty of nature's supreme law."[[2]]

It is not to be supposed that anyone was to be found who denied the general intelligibility of Nature. To have done this would have been to reduce science to an absurdity. Science is bound to proceed upon the assumption that there are "reasons" for things. Moreover, there is mind in man, who is part of the order of Nature. It follows that what is in the part cannot be denied to the whole. All this could be freely admitted. But then the question arose, Is mind the originating source of the movements of matter, or is it not rather itself the product of them?

There were those who did not shrink from affirming that matter produces thought, even as the liver secretes bile. Others preferred to take what seemed to be an intermediate course. They were not prepared to give priority to either mind or matter. Thus Haeckel maintained that matter and thought are only two different aspects, or two fundamental attributes of an underlying something which he defined as "substance." It was to the action of this universal substance that he imagined the "monistic mechanical process" to be due. He went so far as to state his conviction that not even the atom is without "a rudimentary form of sensation and will."[[3]]

In like manner Tyndall had claimed a two-sidedness for matter, and traced all higher developments back to the side which held in it the element of spirit and thought; while admitting that "the production of consciousness by molecular action is quite as inconceivable on mechanical principles as the production of molecular action by consciousness."[[4]]

The bearing of all this upon the question of Design was plain, for, if thought and intention are the outcome and result of the mechanical operations of Nature, it might well seem to follow that mind had been removed from its high place as the dominant and directing power.

But these difficulties with which the theologian was thus confronted in respect of a First Cause and the recognition of Design, were even less formidable than those which were arrayed under the other heads that we have enumerated. It was Huxley who invented the term Agnosticism to describe the position of such of his contemporaries as were not inclined to deny that there was a great Power at work behind the phenomena of the Universe, but were not prepared to admit that this Power could be any degree comprehensible by us. The most systematic exponent of this view was Herbert Spencer. He allowed that we are obliged to refer the phenomenal world and its law and order to a First Cause. "And the First Cause," he said, "must be in every sense perfect, complete, total—including within itself all power, and transcending all law." But he insisted that, "it cannot in any manner or degree be known, in the strict sense of knowing."[[5]] Elsewhere he suggested that it may belong to "a mode of being as much transcending intelligence and will as these transcend mechanical motion." "Our only conception of what we know as Mind in ourselves is the conception of a series of states of consciousness." "How," he asked, "is the 'originating Mind' to be thought of as having states produced by things objective to it, as discriminating among these states, and classing them as like and unlike; and as preferring one objective result to another."[[6]] It was by a similar line of reasoning that Romanes reached the like conclusions.[[7]] "In my opinion," he said, "no explanation of natural order can either be conceived or named other than that of intelligence as the supreme directing cause." But "this cause must be widely different from anything that we know of Mind in ourselves." "If such a Mind exists, it is not conceivable as existing, and we are precluded from assigning to it any attributes."

It was obvious that, if no satisfactory reply were forthcoming to such a contention, the very word Theology must be discarded, since there would be no longer any need for it, or justification of its use.

But there was yet a further criticism that was supposed by not a few to complete the discomfiture of those who still clung to the traditional beliefs. We can find it forcibly expressed in one of the earlier writings of Romanes, who in this case was endorsing the verdict of Mill. "Supposing the Deity to be omnipotent, there can be no inference more transparent than that such wholesale suffering, for whatever ends designed, exhibits an incalculably greater deficiency of beneficence in the divine character than that which we know in any, the very worst, of human characters. For let us pause for one moment to think of what suffering in Nature means. Some hundreds of millions of years ago, some millions of millions of animals must be supposed to have become sentient. Since that time till the present there must have been millions and millions of generations of millions and millions of individuals. And throughout all this period of incalculable duration, this inconceivable host of sentient organisms have been in a state of unceasing battle, dread, ravin, pain. Looking to the outcome, we find that more than one-half of the species which have survived the ceaseless struggle are parasitic in their habits, lower and insentient forms of life feasting on higher and sentient forms; we find teeth and talons whetted for slaughter, hooks and suckers moulded for torment—everywhere a reign of terror, hunger, sickness, with oozing blood and quivering limbs, with gasping breath and eyes of innocence that dimly close in deaths of cruel torture!"[[8]]