We have only to imagine for a moment such a universe in order to realise the inextricable confusion into which its intelligent inhabitants would be plunged by the operation of a viewless and unaccountable agency of this nature. No doubt the hypothesis regarding life, which we have quoted above, limits this mode of action to the molecular motions of matter, but if our line of argument has been followed throughout, the reader will probably acknowledge that the superior intelligences of the universe may have the same appretiation of molecular motions that we have of those of large masses. Now they would in turn be put to inextricable confusion by the advent of an unperceivable, and, from the nature of the case, irresponsible force entitled _will_ operating towards the deflection of these molecular motions, even although the energy of the universe should remain the same. We think that Professor Huxley and some others who have opposed this mode of regarding the position of life have been somewhat unjustly blamed. They have driven the operation of the mystery called life or will out of the objective universe, out of that portion of things which is capable of being scientifically studied by intelligence, and in so doing they have most assuredly done right. The mistake made (whether by this party or by their adversaries) lies in imagining that by such a process they completely get rid of a thing so driven before them, and that it thus disappears from the universe altogether. It does no such thing. It merely disappears from that small circle of light which we may call the universe of scientific perception. But the greater the circle of light (to adopt the words of Dr. Chalmers), the greater the circumference of darkness, and the mystery which has been driven before us looms in the darkness that surrounds this circle, growing more mysterious and more tremendous as the circumference is increased. In fine, we have already remarked that the position of the scientific man is to clear a space before him from which all mystery shall be driven away, and in which there shall be nothing but matter and energy subject to certain definite laws which he can comprehend. There are however three great mysteries (a trinity of mysteries) which elude, and will for ever elude, his grasp, and these will persistently hover around the border of this cleared and illuminated circle,—they are the mystery of the soul’s domicile, in other words, of the universe objectively viewed; the mystery of life and intelligence; and the mystery of God,—and these three are one.