It would be an awkward and almost impracticable task to keep these kinds of reasoning far apart. The natural procedure of thought, is to combine, rather than to dissever, when we marshal facts for the purpose of a full and wide generalization. Yet it does seem practicable to mark every transition of thought distinctly; and, if clearly marked, the distinction may easily be kept in mind.
With this precaution, it may appear allowable to treat Natural Theology in a more discursive manner than could otherwise be permitted. The object of so doing will be to divest discussion as much as possible of a dry, logical stiffness; and, by ranging round each topic[] to look at it in various lights; a process which generally discovers both the weakness and the strength of reasoning. Any one who has read Plato will understand the advantage of Dialogue in this respect. A more familiar book, Coleridge's "Friend," is another apt illustration. Each of its series of essays takes a sweep of the kind; and each "landing-place" affords a rest to the reader, and a fresh beginning to the intellectual tour. Without venturing to copy the quaint invention of landing-places, the present writer intends making every Chapter the occasion of a fresh start. The separate trains of thought will thus proceed from distinct points, and travel by separate routes, so as to admit of full inspection in their progress. Each argument allowed by the reader to be valid, will finally link itself to its neighbours; and all thoughtful persons know how to estimate the strength of convergent conclusions.
The writer trusts, also, that he may be allowed to escape the two alternatives,—either circumlocution, or the use of an objectionable pronoun singular, by employing the plural "we." This word may perhaps have a further good effect; it may remind both reader and writer that they are engaged as pilgrim-companions on a journey of joint exploration.
At the head of all their reasonings, Natural Theologians usually place the celebrated argument from Design. It would be impossible, in discussing it, to reproduce here the many illustrative examples of Design which have been collected. It would likewise be useless; partly, because they are all easily accessible and mostly well known; partly, because their appositeness as illustrations is now fully admitted; and the controversy turns upon questions of another and more abstract kind. It is asked whether the analogy founded on these instances is relevant?—whether it proves too little, or too much?—and, how far the inferences drawn from such examples really go? Our plan will, therefore, be to devote our second Chapter to the examination of such objections; to the review and elucidation of the argument from Design. But if the reader wishes really to study the various questions closely connected with this celebrated line of thought, and to view the reasoning in a shape so complete as to be at once relevant and satisfactory, he may be pleased to bestow a leisure hour on the consecutive perusal of Chapters II., V., and VI., with their appended notes and illustrations.
The third Chapter is intended as a critical propædeutic or foundation for the constructive science of Natural Theology. So far as our experience of men in great cities teaches anything with respect to the speculative difficulties which keep them from God, it seems to teach one undoubted fact. There is grounded in their minds a persuasion (underlying all further objections), that, whatever else we can know, little or nothing is to be learned concerning God. The idea of Theism is thus isolated from every other idea; and there is a presumption against all reasoning which in any way leads up to a determinate thought of the Divine Being or the Divine attributes.
Some such doubters allege the necessary limitation of human knowledge in general:—
"Know then thyself, presume not God to scan;
The proper study of mankind is man."
But, is not one chief object in knowing man, to acquaint ourselves with God? In this spirit Quarles says:—
"Man is man's A B C; there's none that can