When we reflect upon habit, it at once assumes for us the character of useful or injurious. The consequences of a habit are not indifferent. Whatever action tends as a harmonious means to the realization of our purpose is desirable or advantageous, and whatever either partially contradicts or wholly destroys it is disadvantageous. Advantage and disadvantage being, then, only relative terms, dependent upon the aim or purpose which we happen to have in view, a habit which may be advantageous to one man under certain circumstances may be disadvantageous to another man, or even to the same man, under other circumstances. Education must, then, accustom the youth to consider for himself the expediency or inexpediency of any action in relation to his own vocation in life. He must not form habits which will be inexpedient with regard to that. § 31. There is, however, an _absolute_ distinction of habits as morally good and bad. From this absolute stand-point we must, after all, decide what is for us allowable or forbidden, what is expedient and what inexpedient. § 32. As to its form, habit may be either passive or active. By passive habit is meant a habit of composure which surveys undisturbed whatever vicissitudes, either external or internal, may fall to our lot, and maintains itself superior to them all, never allowing its power of acting to be paralyzed by them. It is not, however, merely a stoical indifference, nor is it the composure which comes from inability to receive impressions——a sort of impassivity. It is that composure which is the highest result of power. Nor is it a selfish love of ease which intentionally withdraws itself from annoyances in order to remain undisturbed. It is not manifested because of a desire to be out of these vicissitudes. It is, while in them, to be not of them. It is the composure which does not fret itself over what it cannot change. The soul that has built for itself this stronghold of freedom within itself may vividly experience joy and sorrow, pain and pleasure, and yet serenely know that it is intrenched in walls which are inaccessible to their attacks, because it knows that it is infinitely superior to all that may chance or change. What is meant by active habit in distinction from passive habit is found in our external activity, as skill, facility, readiness of information, etc. It might be considered as the equipping of our inner selves for active contest with the external world; while passive habit is the fortifying of our inner selves against the attack of the external world. The man who possesses habit in both these forms impresses himself in many different ways on the outer world, while at the same time, and all the time, he preserves intact his personality from the constant assaults of the outer world. He handles both spear and shield.