The doctrine taught in the Reply, that belief is, as a general, nay, universal law, independent of the will, surely proves, when examined, to be a plausibility of the shallowest kind. Even in arithmetic, if a boy, through dislike of his employment, and consequent lack of attention, brings out a wrong result for his sum, it can hardly be said that his conclusion is absolutely and in all respects independent of his will. Moving onward, point by point, toward the centre of the argument, I will next take an illustration from mathematics. It has (I apprehend) been demonstrated that the relation of the diameter to the circumference of a circle is not susceptible of full numerical expression. Yet, from time to time, treatises are published which boldly announce that they set forth the quadrature of the circle. I do not deny that this may be purely intellectual error; but would it not, on the other hand, be hazardous to assert that no grain of egotism or ambition has ever entered into the composition of any one of such treatises? I have selected these instances as, perhaps, the most favorable that can be found to the doctrine of the Reply. But the truth is that, if we set aside matters of trivial import, the enormous majority of human judgments are those into which the biassing power off likes and dislikes more or less largely enters. I admit, indeed, that the illative faculty works under rules upon which choice and inclination ought to exercise no influence whatever. But even if it were granted that in fact the faculty of discourse is exempted from all such influence within its own province, yet we come no nearer to the mark, because that faculty has to work upon materials supplied to it by other faculties; it draws conclusions according to premises, and the question has to be determined whether our conceptions set forth in those premises are or are not influenced by moral causes. For, if they be so influenced, then in vain will be the proof that the understanding has dealt loyally and exactly with the materials it had to work upon; inasmuch as, although the intellectual process be normal in itself, the operation may have been tainted _ab initio_ by coloring and distorting influences which have falsified the primary conceptions.