The fact, however, remains that each of these gradations of reasoning may be stated just as easily and more logically as separate and convergent lines of thought, because each can be rested on a separate combination of proofs. But the elucidation of this subject cannot be compressed into few words, and must be deferred to our fifth and sixth chapters. Still there is a very peculiar and special satisfaction in following the path of argument which persuaded an acute and practised reasoner, accomplished in several departments of knowledge, and himself of a turn of mind which would appear naturally adapted to the utmost refinements of sceptical investigation. We shall, therefore, now return to our comparison of Powell with his predecessor. These two distinguished writers do, in fact, come at last to the same conclusion. But they reach it through a difference in the paths travelled over by such logic of evidence as may after all seem natural enough to a theological pleader on one side, and on the other to a scientific physicist. Professor Powell, of course, leads us more deeply than his predecessor into the thorny thickets surrounding Natural Theology. No one can read his essays without remarking the subtlety of his thought, which to many readers appears over refined, and to some as employed on points in themselves unimportant. Mr. Baden Powell's own deliberate judgment was the other way, as we find from the last[29] of his considerable performances on our subject. "Points," he writes, "which may be seen to involve the greatest difficulty to more profound inquirers, are often such as do not occasion the least perplexity to ordinary minds, but are allowed to pass without hesitation.... On the other hand, exceptions held forth as fatal by the shallow caviller are seen by the more deeply reflecting in all their actual littleness and fallacy." We may add that a subtle argument is often like a sharp thin blade, cutting clean into the very heart of a question. If it indeed prove a home thrust, few things ought to be more fearlessly and cheerfully welcomed by those who desire to dissect out the naked, intrinsic truth. We will, therefore, dissect a little deeper, following the Professor's track of demonstration. We find him, then, reaching down to a _septum_, or, as botanists prefer to speak, a strong dissepiment between a _law of Nature_ or _physical causation_, and a _true Cause_ in the highest and most emphatic sense[q].