Conscience, then, is nothing else than the acquaintance we make with our own changeless character through the instrumentality of our acts. A little consideration will show that this definition harmonises perfectly with, and hence receives additional confirmation from, what I have here specially emphasised: namely, the fact that =susceptibility= for the motives of Egoism, of Malice, and of Compassion, which is so widely dissimilar in different individuals, and on which the whole moral value of a man depends, cannot be interpreted by anything else, nor be gained, or removed, by instruction, as if it were something born in time, and therefore variable, and subject to chance. On the contrary, we have seen that it is innate and fixed, an ultimate datum, admitting of no further explanation. Thus an entire life, with the whole of its manifold activity, may be likened to a clock-dial, that marks every movement of the internal works, as they were made once for all; or it resembles a mirror, wherein alone, with the eye of his intellect, each person sees reflected the essential nature of his own Will, that is, the core of his being. Whoever takes the trouble to thoroughly think out what has been put forward here, and in Part. II., Chapter VIII., will discover in the foundation given by me to Ethics a logical consecution, a rounded completeness, wanting to all other theories; to say nothing of the consonance of my view with the facts of experience,--a consonance which he will look for in vain elsewhere. For only the truth can uniformly and consistently agree with itself and with nature; while all false principles are internally at variance with themselves, and externally contradict the testimony of experience, which at every step records its silent protest. I am perfectly aware that the truths advanced in this Essay, and particularly here at the close, strike directly at many deeply rooted prejudices and mistakes, and especially at those attaching to a certain rudimentary system of morals, now much in vogue, and suitable for elementary schools. But I cannot own to feeling any penitence or regret. For, in the first place, I am addressing neither children, nor the _profanum vulgus_, but an Academy of light and learning. Their inquiry is a purely theoretical one, concerned with the ultimate fundamental verities of Ethics; and to a most serious question a serious answer is undoubtedly expected. And secondly, in my opinion, there can be no such thing as harmless mistakes, still less privileged or useful ones. On the contrary, every error works infinitely more evil than good. If, however, it is wished to make existing prepossessions the standard of truth, or the boundary beyond which its investigation is not to go, then it would be more honest to abolish philosophical Faculties and Academies altogether. For where no reality exists, there also no semblance of it should be. <hr class="r5" /> [1] Cf. _Jeremiah_ xiii. 23.--(_Translator._)