When, therefore, a new idea summons us to a new course of action, it may be simply discovering new methods of attaining an object which we valued before, and may at the same time be able to demonstrate by conclusive proofs, whether theoretical or practical, that these methods really lead to the attainment of the object, and are commensurate with its value and with our resources. A new discovery of this sort belongs entirely to the sphere of reason, and therefore its sponsors need put their case only before people of intelligence and good judgment. If such men pronounce the new idea right, and proceed to act as it bids, its victory among the masses is assured: for gradually the masses will follow in the right course. But it will be different if one of these conditions is lacking—if, that is, the object which the new idea sets before us is one that we do not already value, or one not valued proportionately to the difficulty of its attainment; or again if it cannot compel reason, by convincing arguments, to admit the correctness of its judgment as regards the connection between the means and the object, and as regards the resources and the effort necessary for the attainment of the object. In either of these cases the new idea must rely for its success not on reason, but on sentiment. For the growth of a feeling of affection and desire for the object will carry with it not only a strengthening of the determination to strive after its attainment, no matter how great the effort required, but also an increasing intellectual belief in the possibility of its attainment, in spite of the absence of conclusive evidence that it is attainable. Hence those who originate an idea of this kind have not, at the outset of their activity, any concern with the intellectuals, the men of dry logic and cold calculation: it is not in that quarter that they will find support. They must turn only to those whose sensibilities are quick, and who are governed by their feelings; they alone will listen. And for that reason the originators of the idea must themselves be above all things men of keen sensibility, temperamentally capable of concentrating their whole spiritual life on a single point, on one idea and one desire, of devoting their whole life to it and expending in its service their last ounce of strength. By doing their work competently and with absolute devotion they will show that they have themselves boundless faith in the truth of their idea, and infinite love for its service; and that will be the only sure means of awakening faith and love in others. In that way, and not by mere talk, will they gain wide support for their idea. And if they appeal in this way to sentiment, then there is a chance for the idea (provided that it does in some way correspond to a current need) to spread gradually and to win many adherents who will be devoted to it heart and soul. It is true that such adherents, being strong mainly on the side of