The passages quoted at this point from Hamilton and Mansel have been heretofore examined, and need no further notice. We will pass on then to his subsequent reflections upon them. It is worthy of remark, as a general criticism upon these comments, that there is scarcely one, if there is a single expression in the remainder of this chapter, which does not refer to the animal nature and its functions. The illustrations are from the material world, and the terms and expressions are suited thereto. With reference to objects in the Sense, and connections in the Understanding, the "fundamental condition of thought," which Mr. Spencer supplies, is unquestionably valuable. There is "likeness" as well as "relation, plurality, and difference." But observe that both these laws alike are pertinent only to the Sense and Understanding, that they belong to _things in nature_, and consequently have no pertinence to the questions now before us. We are discussing _ideas_, not _things_; and those are simple, and can only be seen, while these are complex, and may be perceived, distinguished, and conceived. If any one shall doubt that Mr. Spencer is wholly occupied with things in nature, it would seem that after having read p. 80, he could doubt no longer. "Animals," "species or genus," "mammals, birds, reptiles, or fishes," are objects by which he illustrates his subject. And one is forced to exclaim, "How can he speak of such things when they have nothing to do with the matter in hand? What have God and infinity and absoluteness to do with 'mammals, birds, reptiles, or fishes'? If we can know only these, why speak of those?" It would seem that the instant they are thus set together and contrasted, the soul must cry out with an irrepressible cry, "It is by an utterly different faculty, and in entirely other modes, that I dwell upon God and the questions concerning him. These modes of the animal nature, by which I know 'mammals,' are different in kind from those of the spiritual person, by which I know God and the eternal truth." And when this distinction becomes clearly appreciated and fixed in one's mind, and the query arises, how could a man so confound the two, and make utter confusion of the subject, as the Limitists have done, he can hardly refrain from quoting Romans I. 20 _et seq._ against them.