But what of the law, or so-called law, of natural selection? In itself, and so far as physical science can either prove or disprove it, it is simply an expression of the alleged fact, that in the struggle of life, any variation, however caused, which is profitable to the individuals of a species, will tend to their preservation, will have a chance of being transmitted to their offspring, and will be of use to them likewise, so that they will survive and multiply at the expense of competitors which are not so well endowed. But natural selection thus understood is obviously in no opposition to design; on the contrary, it is a way in which design may be realised. Some might even hold that design cannot be conceived of as realised in any other natural way; that if not thus realised, it could only be miraculously realised. But Mr Darwin, and many of those who call themselves his followers, tell us not only that there is natural selection, but that blind forces and mechanical laws alone bring it about; that intention and intelligence have nothing to do with it. What proof do they give us? Alas! the painful thing is that they give us none. They point out the blind forces and the mechanical laws by which the selection is effected and its results secured; they show how they are adapted to accomplish their work: and then they assert that these forces and laws explain the whole matter; that no underlying and all-embracing reason has prepared, arranged, and used them. They see the physical agencies and the physical process by which order and beauty have been attained--they do not see intelligence and design; and because they do not see them, they conclude that they have no existence. They describe the mechanism which their senses apprehend, and affirm it to have made itself, or at least to have been unmade, and to work of itself, because the mind which contrived it and directs it is inaccessible to sense. All their reasoning resolves itself into a denial of what is spiritual because it is unseen.