The time of Enthusiasm derives from the fact that there is at hand an eminent man who is in sympathy with the spirit of the people and acts in accord with it. Hence he finds universal and willing obedience. To arouse enthusiasm it is necessary for a man to adjust himself and his ordinances to the character of those whom he has to lead. The inviolability of natural laws rests on this principle of movement along the line of least resistance. Theses laws are not forces external to things but represent the harmony of movement immanent in them. That is why the celestial bodies do not deviate from their orbits and why all events in nature occur with fixed regularity. It is the same with human society: only such laws are rooted in popular sentiment can be enforced, while laws violating this sentiment merely arouse resentment.
Again, it is enthusiasm that enables us to install helpers for the completion of an undertaking without fear of secret opposition. It is enthusiasm too that can unify mass movements, as in war, so that they achieve victory.