Equally common with habits in their control of the actions of man, and equally important as a consideration for the leader, are the impulses to action that come from natural instincts. Of course it is true that man's will and determination are stronger than his instincts, and that if they are set to any given purpose they can force every instinctive impulse from his field of consciousness and hold his actions to the predetermined course. But such control of man's actions is fatiguing to the man, and does not give the results that come when his mind is happily at ease and free to entertain the impulses from the constructive instincts with which nature has bountifully endowed him for the good of the race. Thus necessity may make a man determine to do his work in spite of brutal treatment and injured self-respect, and he will carry through the day's work well enough to hold his position, but not much better. Good work, anything like the maximum of a man's accomplishment, cannot be produced in that spirit. Such work comes only with the free play of man's better instincts. It should be clear then that the leader who controls through appeal to these instincts will get better results than he who rules by force or the compulsion of circumstance. A good leader must therefore give thought to these things, until he comes to feel instinctively how men react to the ordinary things of life. They are matters of frequent reference in discussing the principles of leadership. Among these instincts, those of the greatest interest to the leader are naturally the instincts of leadership--the instinct to lead others and the instinct to follow others when we think they know the answer better than we. The manifestations of both these instincts are very common in our daily life, which shows their availability and value to the leader as agents for controlling men. He should therefore understand why they exist and how to appeal to them. Why is it that mankind is always wanting to proselyte, and preach, and teach, and step to the front with suggestions? And why is it that one so readily follows another who presents any proposition which seems reasonable? These instincts were implanted in man to make him play his part in the world's progress. The whole scheme of the universe, physical and spiritual, is one of development and progress--of making everything engage in a constant effort to rise to a higher plane. Man was intended to be the foremost instrument of this purpose to advance civilization. His instincts were given him to ensure progress, to help the race win along, to lead others where he felt he knew best what was to be done, to follow where he felt that another knew better than he. To want to lead is therefore a natural instinct and a good one; and any man may take honest pride in striving to qualify as a good leader.