ON subjects divine, and therefore partaking of what is infinite, there is always a danger in attempting to class and separate into definite and human systems of division. The relations and dependencies of things are so great, that there is often much fallacy in marking out and distinguishing, and then arguing upon our own divisions and distinctions... For things divine as well as things natural blend with one another so imperceptibly, that no definite and accurate line can be drawn between them. Thus it is with the colors of the rainbow, with the seasons of the year, with the sea and shore, they mutually recede and retire and blend into each other; so that it would be difficult, and perhaps impossible, to draw any strong line of demarcation.
Allowing therefore that systems and divisions are liable to these errors, from the very infirmity of our human knowledge, which can in no way circumscribe the infinite; and therefore not depending too much on their exactness and accuracy in embracing the whole subject; we may still have recourse to them in order to arrange our ideas and facilitate our enquiries. And we may be perhaps allowed to throw these analogies into something of a scheme; being at the same time aware that they run into each other, and into other numerous and indefinable analogies not to be embraced in the same.
Shallow minds alone can rest in systems, and be satisfied with the apparent ease and clearness with which they arrange great truths; their clearness often arises from passing over all the difficulties, without diving into their depths: for system is human, and squares out the surface; the subjects systematized are of a nature divine and infinite: and contain within them unfathomable deeps. ―Williams.