If I had to bring such a spoilt child to his senses, I would take care that his smartest clothes were the most uncomfortable, that he was always cramped, constrained, and embarrassed in every way; freedom and mirth should flee before his splendour. If he wanted to take part in the games of children more simply dressed, they should cease their play and run away. Before long I should make him so tired and sick of his magnificence, such a slave to his gold-laced coat, that it would become the plague of his life, and he would be less afraid to behold the darkest dungeon than to see the preparations for his adornment. Before the child is enslaved by our prejudices his first wish is always to be free and comfortable. The plainest and most comfortable clothes, those which leave him most liberty, are what he always likes best.

There are habits of body suited for an active life and others for a sedentary life. The latter leaves the humours an equable and uniform course, and the body should be protected from changes in temperature; the former is constantly passing from action to rest, from heat to cold, and the body should be inured to these changes. Hence people, engaged in sedentary pursuits indoors, should always be warmly dressed, to keep their bodies as nearly as possible at the same temperature at all times and seasons. Those, however, who come and go in sun, wind, and rain, who take much exercise, and spend most of their time out of doors, should always be lightly clad, so as to get used to the changes in the air and to every degree of temperature without suffering inconvenience. I would advise both never to change their clothes with the changing seasons, and that would be the invariable habit of my pupil Emile. By this I do not mean that he should wear his winter clothes in summer like many people of sedentary habits, but that he should wear his summer clothes in winter like hard-working folk. Sir Isaac Newton always did this, and he lived to be eighty.

Emile should wear little or nothing on his head all the year round. The ancient Egyptians always went bareheaded; the Persians used to wear heavy tiaras and still wear large turbans, which according to Chardin are required by their climate. I have remarked elsewhere on the difference observed by Herodotus on a battle-field between the skulls of the Persians and those of the Egyptians. Since it is desirable that the bones of the skull should grow harder and more substantial, less fragile and porous, not only to protect the brain against injuries but against colds, fever, and every influence of the air, you should therefore accustom your children to go bare-headed winter and summer, day and night. If you make them wear a night-cap to keep their hair clean and tidy, let it be thin and transparent like the nets with which the Basques cover their hair. I am aware that most mothers will be more impressed by Chardin's observations than my arguments, and will think that all climates are the climate of Persia, but I did not choose a European pupil to turn him into an Asiatic.

Children are generally too much wrapped up, particularly in infancy. They should be accustomed to cold rather than heat; great cold never does them any harm, if they are exposed to it soon enough; but their skin is still too soft and tender and leaves too free a course for perspiration, so that they are inevitably exhausted by excessive heat. It has been observed that infant mortality is greatest in August. Moreover, it seems certain from a comparison of northern and southern races that we become stronger by bearing extreme cold rather than excessive heat. But as the child's body grows bigger and his muscles get stronger, train him gradually to bear the rays of the sun. Little by little you will harden him till he can face the burning heat of the tropics without danger.

Locke, in the midst of the manly and sensible advice he gives us, falls into inconsistencies one would hardly expect in such a careful thinker. The same man who would have children take an ice-cold bath summer and winter, will not let them drink cold water when they are hot, or lie on damp grass. But he would never have their shoes water-tight; and why should they let in more water when the child is hot than when he is cold, and may we not draw the same inference with regard to the feet and body that he draws with regard to the hands and feet and the body and face? If he would have a man all face, why blame me if I would have him all feet?

To prevent children drinking when they are hot, he says they should be trained to eat a piece of bread first. It is a strange thing to make a child eat because he is thirsty; I would as soon give him a drink when he is hungry. You will never convince me that our first instincts are so ill-regulated that we cannot satisfy them without endangering our lives. Were that so, the man would have perished over and over again before he had learned how to keep himself alive.

Whenever Emile is thirsty let him have a drink, and let him drink fresh water just as it is, not even taking the chill off it in the depths of winter and when he is bathed in perspiration. The only precaution I advise is to take care what sort of water you give him. If the water comes from a river, give it him just as it is; if it is spring-water let it stand a little exposed to the air before he drinks it. In warm weather rivers are warm; it is not so with springs, whose water has not been in contact with the air. You must wait till the temperature of the water is the same as that of the air. In winter, on the other hand, spring water is safer than river water. It is, however, unusual and unnatural to perspire greatly in winter, especially in the open air, for the cold air constantly strikes the skin and drives the perspiration inwards, and prevents the pores opening enough to give it passage. Now I do not intend Emile to take his exercise by the fireside in winter, but in the open air and among the ice. If he only gets warm with making and throwing snowballs, let him drink when he is thirsty, and go on with his game after drinking, and you need not be afraid of any ill effects. And if any other exercise makes him perspire let him drink cold water even in winter provided he is thirsty. Only take care to take him to get the water some little distance away. In such cold as I am supposing, he would have cooled down sufficiently when he got there to be able to drink without danger. Above all, take care to conceal these precautions from him. I would rather he were ill now and then, than always thinking about his health.

Since children take such violent exercise they need a great deal of sleep. The one makes up for the other, and this shows that both are necessary. Night is the time set apart by nature for rest. It is an established fact that sleep is quieter and calmer when the sun is below the horizon, and that our senses are less calm when the air is warmed by the rays of the sun. So it is certainly the healthiest plan to rise with the sun and go to bed with the sun. Hence in our country man and all the other animals with him want more sleep in winter than in summer. But town life is so complex, so unnatural, so subject to chances and changes, that it is not wise to accustom a man to such uniformity that he cannot do without it. No doubt he must submit to rules; but the chief rule is this—be able to break the rule if necessary. So do not be so foolish as to soften your pupil by letting him always sleep his sleep out. Leave him at first to the law of nature without any hindrance, but never forget that under our conditions he must rise above this law; he must be able to go to bed late and rise early, be awakened suddenly, or sit up all night without ill effects. Begin early and proceed gently, a step at a time, and the constitution adapts itself to the very conditions which would destroy it if they were imposed for the first time on the grown man.

In the next place he must be accustomed to sleep in an uncomfortable bed, which is the best way to find no bed uncomfortable. Speaking generally, a hard life, when once we have become used to it, increases our pleasant experiences; an easy life prepares the way for innumerable unpleasant experiences. Those who are too tenderly nurtured can only sleep on down; those who are used to sleep on bare boards can find them anywhere. There is no such thing as a hard bed for the man who falls asleep at once.

The body is, so to speak, melted and dissolved in a soft bed where one sinks into feathers and eider-down. The reins when too warmly covered become inflamed. Stone and other diseases are often due to this, and it invariably produces a delicate constitution, which is the seed-ground of every ailment.

The best bed is that in which we get the best sleep. Emile and I will prepare such a bed for ourselves during the daytime. We do not need Persian slaves to make our beds; when we are digging the soil we are turning our mattresses. I know that a healthy child may be made to sleep or wake almost at will. When the child is put to bed and his nurse grows weary of his chatter, she says to him, "Go to sleep." That is much like saying, "Get well," when he is ill. The right way is to let him get tired of himself. Talk so much that he is compelled to hold his tongue, and he will soon be asleep. Here is at least one use for sermons, and you may as well preach to him as rock his cradle; but if you use this narcotic at night, do not use it by day.

I shall sometimes rouse Emile, not so much to prevent his sleeping too much, as to accustom him to anything—even to waking with a start. Moreover, I should be unfit for my business if I could not make him wake himself, and get up, so to speak, at my will, without being called.

If he wakes too soon, I shall let him look forward to a tedious morning, so that he will count as gain any time he can give to sleep. If he sleeps too late I shall show him some favourite toy when he wakes. If I want him to wake at a given hour I shall say, "To-morrow at six I am going fishing," or "I shall take a walk to such and such a place. Would you like to come too?" He assents, and begs me to wake him. I promise, or do not promise, as the case requires. If he wakes too late, he finds me gone. There is something amiss if he does not soon learn to wake himself.

Moreover, should it happen, though it rarely does, that a sluggish child desires to stagnate in idleness, you must not give way to this tendency, which might stupefy him entirely, but you must apply some stimulus to wake him. You must understand that is no question of applying force, but of arousing some appetite which leads to action, and such an appetite, carefully selected on the lines laid down by nature, kills two birds with one stone.

If one has any sort of skill, I can think of nothing for which a taste, a very passion, cannot be aroused in children, and that without vanity, emulation, or jealousy. Their keenness, their spirit of imitation, is enough of itself; above all, there is their natural liveliness, of which no teacher so far has contrived to take advantage. In every game, when they are quite sure it is only play, they endure without complaint, or even with laughter, hardships which they would not submit to otherwise without floods of tears. The sports of the young savage involve long fasting, blows, burns, and fatigue of every kind, a proof that even pain has a charm of its own, which may remove its bitterness. It is not every master, however, who knows how to season this dish, nor can every scholar eat it without making faces. However, I must take care or I shall be wandering off again after exceptions.

It is not to be endured that man should become the slave of pain, disease, accident, the perils of life, or even death itself; the more familiar he becomes with these ideas the sooner he will be cured of that over-sensitiveness which adds to the pain by impatience in bearing it; the sooner he becomes used to the sufferings which may overtake him, the sooner he shall, as Montaigne has put it, rob those pains of the sting of unfamiliarity, and so make his soul strong and invulnerable; his body will be the coat of mail which stops all the darts which might otherwise find a vital part. Even the approach of death, which is not death itself, will scarcely be felt as such; he will not die, he will be, so to speak, alive or dead and nothing more. Montaigne might say of him as he did of a certain king of Morocco, "No man ever prolonged his life so far into death." A child serves his apprenticeship in courage and endurance as well as in other virtues; but you cannot teach children these virtues by name alone; they must learn them unconsciously through experience.

But speaking of death, what steps shall I take with regard to my pupil and the smallpox? Shall he be inoculated in infancy, or shall I wait till he takes it in the natural course of things? The former plan is more in accordance with our practice, for it preserves his life at a time when it is of greater value, at the cost of some danger when his life is of less worth; if indeed we can use the word danger with regard to inoculation when properly performed.

But the other plan is more in accordance with our general principles—to leave nature to take the precautions she delights in, precautions she abandons whenever man interferes. The natural man is always ready; let nature inoculate him herself, she will choose the fitting occasion better than we.

Do not think I am finding fault with inoculation, for my reasons for exempting my pupil from it do not in the least apply to yours. Your training does not prepare them to escape catching smallpox as soon as they are exposed to infection. If you let them take it anyhow, they will probably die. I perceive that in different lands the resistance to inoculation is in proportion to the need for it; and the reason is plain. So I scarcely condescend to discuss this question with regard to Emile. He will be inoculated or not according to time, place, and circumstances; it is almost a matter of indifference, as far as he is concerned. If it gives him smallpox, there will be the advantage of knowing what to expect, knowing what the disease is; that is a good thing, but if he catches it naturally it will have kept him out of the doctor's hands, which is better.

An exclusive education, which merely tends to keep those who have received it apart from the mass of mankind, always selects such teaching as is costly rather than cheap, even when the latter is of more use. Thus all carefully educated young men learn to ride, because it is costly, but scarcely any of them learn to swim, as it costs nothing, and an artisan can swim as well as any one. Yet without passing through the riding school, the traveller learns to mount his horse, to stick on it, and to ride well enough for practical purposes; but in the water if you cannot swim you will drown, and we cannot swim unless we are taught. Again, you are not forced to ride on pain of death, while no one is sure of escaping such a common danger as drowning. Emile shall be as much at home in the water as on land. Why should he not be able to live in every element? If he could learn to fly, he should be an eagle; I would make him a salamander, if he could bear the heat.

People are afraid lest the child should be drowned while he is learning to swim; if he dies while he is learning, or if he dies because he has not learnt, it will be your own fault. Foolhardiness is the result of vanity; we are not rash when no one is looking. Emile will not be foolhardy, though all the world were watching him. As the exercise does not depend on its danger, he will learn to swim the Hellespont by swimming, without any danger, a stream in his father's park; but he must get used to danger too, so as not to be flustered by it. This is an essential part of the apprenticeship I spoke of just now. Moreover, I shall take care to proportion the danger to his strength, and I shall always share it myself, so that I need scarcely fear any imprudence if I take as much care for his life as for my own.

A child is smaller than a man; he has not the man's strength or reason, but he sees and hears as well or nearly as well; his sense of taste is very good, though he is less fastidious, and he distinguishes scents as clearly though less sensuously. The senses are the first of our faculties to mature; they are those most frequently overlooked or neglected.

To train the senses it is not enough merely to use them; we must learn to judge by their means, to learn to feel, so to speak; for we cannot touch, see, or hear, except as we have been taught.

There is a mere natural and mechanical use of the senses which strengthens the body without improving the judgment. It is all very well to swim, run, jump, whip a top, throw stones; but have we nothing but arms and legs? Have we not eyes and ears as well; and are not these organs necessary for the use of the rest? Do not merely exercise the strength, exercise all the senses by which it is guided; make the best use of every one of them, and check the results of one by the other. Measure, count, weigh, compare. Do not use force till you have estimated the resistance; let the estimation of the effect always precede the application of the means. Get the child interested in avoiding insufficient or superfluous efforts. If in this way you train him to calculate the effects of all his movements, and to correct his mistakes by experience, is it not clear that the more he does the wiser he will become?

Take the case of moving a heavy mass; if he takes too long a lever, he will waste his strength; if it is too short, he will not have strength enough; experience will teach him to use the very stick he needs. This knowledge is not beyond his years. Take, for example, a load to be carried; if he wants to carry as much as he can, and not to take up more than he can carry, must he not calculate the weight by the appearance? Does he know how to compare masses of like substance and different size, or to choose between masses of the same size and different substances? He must set to work to compare their specific weights. I have seen a young man, very highly educated, who could not be convinced, till he had tried it, that a bucket full of blocks of oak weighed less than the same bucket full of water.

All our senses are not equally under our control. One of them, touch, is always busy during our waking hours; it is spread over the whole surface of the body, like a sentinel ever on the watch to warn us of anything which may do us harm. Whether we will or not, we learn to use it first of all by experience, by constant practice, and therefore we have less need for special training for it. Yet we know that the blind have a surer and more delicate sense of touch than we, for not being guided by the one sense, they are forced to get from the touch what we get from sight. Why, then, are not we trained to walk as they do in the dark, to recognise what we touch, to distinguish things about us; in a word, to do at night and in the dark what they do in the daytime without sight? We are better off than they while the sun shines; in the dark it is their turn to be our guide. We are blind half our time, with this difference: the really blind always know what to do, while we are afraid to stir in the dark. We have lights, you say. What always artificial aids. Who can insure that they will always be at hand when required. I had rather Emil's eyes were in his finger tips, than in the chandler's shop.