It is a prevalent notion just now, that religious opinion does not enter, as a matter of necessity, in any considerable measure, into the treatment of scientific or literary subjects. It is supposed, that, whatever a teacher's persuasion may be, whether Christian or not, or whatever kind or degree of Christianity, it need not betray itself in such lectures or publications as the duties of his office require. Whatever he holds about the Supreme Being, His attributes and His works, be it truth or error, does not make him better or worse in experiment or speculation. He can discourse upon plants, or insects, or birds, or the powers of the mind, or languages, or historical documents, or literature, or any other such matter of fact, with equal accurateness and profit, whatever he may determine about matters which are entirely distinct from them.

In answer to this representation I contended last week, that a positive disunion takes place between Theology and Secular Science, whenever they are not actually united. Here, not to be at peace is to be at war; and for this reason: — The assemblage of Sciences, which together make up Universal Knowledge, is not an accidental or a varying heap of acquisitions, but a system, and may be said to be in equilibrio, as long as all its portions are secured to it. Take away one of them, and that one so important in the catalogue as Theology, and disorder and ruin at once ensue.