In like manner, the opposite theses, as to the attainment or the impossibility of attainment of the end of history, reveal their common defect of positing the end as _extrinsic_ to history, conceiving of it either as that which can be reached in time (_progressus ad finitum_), or as that which can never be attained, but only infinitely approximated (_progressus ad infinitum_). But where the end has been correctly conceived as _internal_--that is to say, all one with development itself--we must conclude that it is attained at every instant, and at the same time not attained, because every attainment is the formation of a new prospect, whence we have at every moment the satisfaction of possession, and arising from this the dissatisfaction which drives us to seek a new possession.[1] Finally, the conceptions of history as a passage from evil to good (progress), or from good to evil (decadence, regression), take their origin from the same error of entifying and making extrinsic good and evil, joy and sorrow (which are the dialectical construction of reality itself). To unite them in the eclectic conception of an alternation of good and evil, of progress and regress, is incorrect. The true solution is that of progress understood not as a passage from evil to good, as though from one state to another, but as the passage from the good to the better, in which the evil is the good itself seen in the light of the better. These are all philosophical solutions which are at variance with the superficial theses of controversialists (dictated to them by sentimental motives or imaginative combinations, really mythological or resulting in mythologies), to the same extent that they are in accordance with profound human convictions and with the tireless toil, the trust, the courage, which constitute their ethical manifestations. By drawing the consequences of the dialectical conception of progress something more immediately effective can be achieved in respect to the practice and history of historiography. For we find in that conception the origin of a historical maxim, in the mouth of every one, yet frequently misunderstood and frequently violated--that is to say, that to history pertains not to _judge,_ but to _explain,_ and that it should be not _subjective_ but _objective._