But while using the force of demonstration to an extent hitherto impossible, Positivists will take care not to exaggerate its importance. Moral education, even in its more systematic parts, should rest principally upon Feeling, as the mere statement of the great human problem indicates. The study of moral questions, intellectually speaking, is most valuable; but the effect it leaves is not directly moral, since the analysis will refer, not to our own actions, but to those of others; for all scientific investigations, to be impartial and free from confusion, must be objective, not subjective. Now to judge others without immediate reference to self, is a process which may possibly result in strong convictions, but so far from calling out right feelings, it will, if carried too far, interfere with or check their natural development. However, the new school of moralists is the less likely to err in this direction, that it would be totally inconsistent with that profound knowledge of human nature in which Positivism has already shown itself so far superior to Catholicism. No one knows so well as the Positivist that the principal source of real morality lies in direct exercise of our social sympathies, whether systematic or spontaneous. He will spare no efforts to develop these sympathies from the earliest years by every method which sound philosophy can indicate. It is in this that moral education, whether private or public, principally consists; and to it mental education is always to be held subordinate. I shall revert to these remarks in the next chapter, when I come to the general question of educating the People. [Organization of Public Opinion] But however efficient the training received in youth, it will not be enough to regulate our conduct in after years, amidst all the distracting influences of practical life, unless the same spiritual power which provides the education prolong its influence over our maturity. Part of its task will be to recall individuals, classes, and even nations, when the case requires it, to principles which they have forgotten or misinterpreted, and to instruct them in the means of applying them wisely. And here, even more than in the work of education strictly so called, the appeal will be to Feeling rather than to pure Reason. Its force will be derived from Public Opinion strongly organized. If the spiritual power awards its praise and blame justly, public opinion, as I shall show in the next chapter, will lend it the most irresistible support. This moral action of Humanity upon each of her members has always existed whenever there was any real community of principles and feelings. But its strength will be far greater under the Positive system. The reality of the doctrine and the social character of modern civilization give advantages to the new spiritual power which were denied to Catholicism. [Commemoration of great men]