The more abstractly correct and hence powerful this idea will be

The more abstractly correct and hence powerful this idea will be, the more impossible remains its complete fulfillment as long as it continues to depend on human beings... If this were not so, the founders of religion could not be counted among the greatest men of this earth... In its workings, even the religion of love is only the weak reflection of the will of its exalted founder; its significance, however, lies in the direction which it attempted to give to a universal human development of culture, ethics, and morality.