mind as greatly as the latter "transcends mechanical motion;" and therefore that although it is true, as a matter of logical terminology, that we ought to designate such an entity "Not mind" or "Blank," still, as a matter of psychology, we may come nearer to the truth by assimilating in thought this entity with the nearest analogies which experience supplies, than by assimilating it in thought with any other entity--such as force or matter--which are felt to be in all likelihood still more remote from it in nature. On the other hand, to an atheist it will no doubt appear more conceivable, because more simple, to accept the dogma of an eternal self-existence of something which we call force and matter, and with this dogma to accept the implication of a necessary self-evolution of cosmic harmony, than to resort to the additional and no less inconceivable supposition of a self-existing Agent which must be regarded both as Mind and as Not-mind at the same time. But in both cases, in whatever degree this test of relative inconceivability of a negative is held by the disputants to be valid in solving the problem of Theism, in that degree is each man entitled to his respective estimate of the probability in question. And thus we arrive at the judgment that the rational probability of Theism legitimately varies with the character of the mind which contemplates it. For, as the test of absolute inconceivability is equally annihilative in whichever direction it is applied, the test of relative inconceivability is the only one that remains; and as the formal conditions of a metaphysical teleology are undoubtedly present on the one hand, and the formal conditions of a physical explanation of cosmic harmony are no less undoubtedly present on the other hand, it follows that a theist and an atheist have an equal right to employ this test of relative inconceivability. And as there is no more ultimate court of appeal whereby to decide the question than the universe as a whole, each man has here an equal argumentative right to abide by the decision which that court awards _to him individually_--to accept whatever probability the sum-total of phenomena appears to present to his particular understanding. And it is needless to say that experience shows, even among well-informed and accurate reasoners, how large an allowance must thus be made for personal equations. To some men the facts of external nature seem to proclaim a God with clarion voice, while to other men the same facts bring no whisper of such a message. All, therefore, that a logician can here do is to remark, that the individuals in each class--provided they bear in mind the strictly _relative_ character of their belief--have a similar right to be regarded as holding a rational creed: the grounds of belief in this case logically vary with the natural disposition and the subsequent training of different minds.[34]