The apologist may retort that he did not mean answer to the argument from coherency of conduct. In measuring utility you have to take into account not merely the service rendered to the objects of the present hour, but the contribution to growth, progress, and the future. From this point of view most of the talk about unity of character is not much more than a glorifying of stagnation. It leaves out of sight the conditions necessary for the continuance of the unending task of human improvement. Now whatever ease may be given to an individual or a generation by social or religious error, such error at any rate can conduce nothing to further advancement That, at least, is not one of its possible utilities. This is also one of the answers to the following plea. 'Though the knowledge of every positive truth is an useful acquisition, this doctrine cannot without reservation he applied to negative truth. When the only truth ascertainable is that nothing can be known, we do not, by this knowledge, gain any new fact by which to guide ourselves.'[10] But logical coherency, but a kind of practical everyday coherency, which may be open to a thousand abstract objections, yet which still secures both to the individual and to society a number of advantages that might be endangered by any disturbance of opinion or motive. No doubt, and the method and season of chasing erroneous opinions and motives out of the mind must always be a matter of much careful and far-seeing consideration. Only in the course of such consideration, let us not admit the notion in any form that error can have even provisional utility. For it is not the error which confers the advantages that we desire to preserve, but some true opinion or just motive or high or honest sentiment, which exists and thrives and operates in spite of the error and in face of it, springing from man's spontaneous and unformulated recognition of the real relations of things. This recognition is very faint in the beginnings of society. It grows clearer and firmer with each step forward. And in a tolerably civilised age it has become a force on which you can fairly lean with a considerable degree of assurance. And this leads to the central point of the the negative truth that nothing can be known is in fact a truth that guides us. [Transcriber's note: sic.] It leads us away from sterile and irreclaimable tracts of thought and emotion, and so inevitably compels the energies which would otherwise have been wasted, to feel after a more profitable direction. By leaving the old guide-marks undisturbed, you may give ease to an existing generation, but the present ease is purchased at the cost of future growth. To have been deprived of the faith of the old dispensation, is the first condition of strenuous endeavour after the new.