But man has other enemies more formidable, against which he is not provided with such means of defence: these are the natural infirmities of infancy, old age, and illness of every kind, melancholy proofs of our weakness, of which the two first are common to all animals, and the last belongs chiefly to man in a state of society. With regard to infancy, it is observable that the mother, carrying her child always with her, can nurse it with much greater ease than the females of many other animals, which are forced to be perpetually going and coming, with great fatigue, one way to find subsistence, and another to suckle or feed their young. It is true that if the woman happens to perish, the infant is in great danger of perishing with her; but this risk is common to many other species of animals, whose young take a long time before they are able to provide for themselves. And if our infancy is longer than theirs, our lives are longer in proportion; so that all things are in this respect fairly equal; though there are other rules to be considered regarding the duration of the first period of life, and the number of young, which do not affect the present subject. In old age, when men are less active and perspire little, the need for food diminishes with the ability to provide it. As the savage state also protects them from gout and rheumatism, and old age is, of all ills, that which human aid can least alleviate, they cease to be, without others perceiving that they are no more, and almost without perceiving it themselves.

With respect to sickness, I shall not repeat the vain and false declamations which most healthy people pronounce against medicine; but I shall ask if any solid observations have been made from which it may be justly concluded that, in the countries where the art of medicine is most neglected, the mean duration of man's life is less than in those where it is most cultivated. How indeed can this be the case, if we bring on ourselves more diseases than medicine can furnish remedies? The great inequality in manner of living, the extreme idleness of some, and the excessive labour of others, the easiness of exciting and gratifying our sensual appetites, the too exquisite foods of the wealthy which overheat and fill them with indigestion, and, on the other hand, the unwholesome food of the poor, often, bad as it is, insufficient for their needs, which induces them, when opportunity offers, to eat voraciously and overcharge their stomachs; all these, together with sitting up late, and excesses of every kind, immoderate transports of every passion, fatigue, mental exhaustion, the innumerable pains and anxieties inseparable from every condition of life, by which the mind of man is incessantly tormented; these are too fatal proofs that the greater part of our ills are of our own making, and that we might have avoided them nearly all by adhering to that simple, uniform and solitary manner of life which nature prescribed. If she destined man to be healthy, I venture to declare that a state of reflection is a state contrary to, nature, and that a thinking man is a depraved animal. When we think of the good constitution of the savages, at least of those whom we have not ruined with our spirituous liquors, and reflect that they are troubled with hardly any disorders, save wounds and old age, we are tempted to believe that, in following the history of civil society, we shall be telling also that of human sickness. Such, at least, was the opinion of Plato, who inferred from certain remedies prescribed, or approved, by Podalirius and Machaon at the siege of Troy, that several sicknesses which these remedies gave rise to in his time, were not then known to mankind: and Celsus tells us that diet, which is now so necessary, was first invented by Hippocrates.

Being subject therefore to so few causes of sickness, man, in the state of nature, can have no need of remedies, and still less of physicians: nor is the human race in this respect worse off than other animals, and it is easy to learn from hunters whether they meet with many infirm animals in the course of the chase. It is certain they frequently meet with such as carry the marks of having been considerably wounded, with many that have had bones or even limbs broken, yet have been healed without any Other surgical assistance than that of time, or any other regimen than that of their ordinary life. At the same time their cures seem not to have been less perfect, for their not having been tortured by incisions, poisoned with drugs, or wasted by fasting. In short, however useful medicine, properly administered, may be among us, it is certain that, if the savage, when he is sick and left to himself, has nothing to hope but from nature, he has, on the other hand, nothing to fear but from his disease; which renders his situation often preferable to our own.

We should beware, therefore, of confounding the savage man with the men we have daily before our eyes. Nature treats all the animals left to her care with a predilection that seems to show how jealous she is of that right. The horse, the cat, the bull, and even the ass are generally of greater stature, and always more robust, and have more vigour, strength and courage, when they run wild in the forests than when bred in the stall. By becoming domesticated, they lose half these advantages; and it seems as if all our care to feed and treat them well serves only to deprave them. It is thus with man also: as he becomes sociable and a slave, he grows weak, timid and servile; his effeminate way of life totally enervates his strength and courage. To this it may be added that there is still a greater difference between savage and civilised man, than between wild and tame beasts: for men and brutes having been treated alike by nature, the several conveniences in which men indulge themselves still more than they do their beasts, are so many additional causes of their deeper degeneracy.

It is not therefore so great a misfortune to these primitive men, nor so great an obstacle to their preservation, that they go naked, have no dwellings and lack all the superfluities which we think so necessary. If their skins are not covered with hair, they have no need of such covering in warm climates; and, in cold countries, they soon learn to appropriate the skins of the beasts they have overcome. If they have but two legs to run with, they have two arms to defend themselves with, and provide for their wants. Their children are slowly and with difficulty taught to walk; but their mothers are able to carry them with ease; advantage which other animals lack, as the mother, if pursued, is forced either to abandon her young, or to regulate her pace by theirs. Unless, in short, we suppose a singular and fortuitous concurrence of circumstances of which I shall speak later, and which would be unlikely to exist, it is plain in every state of the case, that the man who first made himself clothes or a dwelling was furnishing himself with things not at all necessary; for he had till then done without them, and there is no reason why he should not have been able to put up in manhood with the same kind of life as had been his in infancy.

Solitary, indolent, and perpetually accompanied by danger, the savage cannot but be fond of sleep; his sleep too must be light, like that of the animals, which think but little and may be said to slumber all the time they do not think. Self-preservation being his chief and almost sole concern, he must exercise most those faculties which are most concerned with attack or defence, either for overcoming his prey, or for preventing him from becoming the prey of other animals. On the other hand, those organs which are perfected only by softness and sensuality will remain in a gross and imperfect state, incompatible with any sort of delicacy; so that, his senses being divided on this head, his touch and taste will be extremely coarse, his sight, hearing and smell exceedingly fine and subtle. Such in general is the animal condition, and such, according to the narratives of travellers, is that of most savage nations. It is therefore no matter for surprise that the Hottentots of the Cape of Good Hope distinguish ships at sea, with the naked eye, at as great a distance as the Dutch can do with their telescopes; or that the savages of America should trace the Spaniards, by their smell, as well as the best dogs could have done; or that these barbarous peoples feel no pain in going naked, or that they use large quantities of piemento with their food, and drink the strongest European liquors like water.

Hitherto I have considered merely the physical man; let us now take a view of him on his metaphysical and moral side.

I see nothing in any animal but an ingenious machine, to which nature hath given senses to wind itself up, and to guard itself, to a certain degree, against anything that might tend to disorder or destroy it. I perceive exactly the same things in the human machine, with this difference, that in the operations of the brute, nature is the sole agent, whereas man has some share in his own operations, in his character as a free agent. The one chooses and refuses by instinct, the other from an act of free-will: hence the brute cannot deviate from the rule prescribed to it, even when it would be advantageous for it to do so; and, on the contrary, man frequently deviates from such rules to his own prejudice. Thus a pigeon would be starved to death by the side of a dish of the choicest meats, and a cat on a heap of fruit or grain; though it is certain that either might find nourishment in the foods which it thus rejects with disdain, did it think of trying them. Hence it is that dissolute men run into excesses which bring on fevers and death; because the mind depraves the senses, and the will continues to speak when nature is silent.

Every animal has ideas, since it has senses; it even combines those ideas in a certain degree; and it is only in degree that man differs, in this respect, from the brute. Some philosophers have even maintained that there is a greater difference between one man and another than between some men and some beasts. It is not, therefore, so much the understanding that constitutes the specific difference between the man and the brute, as the human quality of free-agency. Nature lays her commands on every animal, and the brute obeys her voice. Man receives the same impulsion, but at the same time knows himself at liberty to acquiesce or resist: and it is particularly in his consciousness of this liberty that the spirituality of his soul is displayed. For physics may explain, in some measure, the mechanism of the senses and the formation of ideas; but in the power of willing or rather of choosing, and in the feeling of this power, nothing is to be found but acts which are purely spiritual and wholly inexplicable by the laws of mechanism.

However, even if the difficulties attending all these questions should still leave room for difference in this respect between men and brutes, there is another very specific quality which distinguishes them, and which will admit of no dispute. This is the faculty of self-improvement, which, by the help of circumstances, gradually develops all the rest of our faculties, and is inherent in the species as in the individual: whereas a brute is, at the end of a few months, all he will ever be during his whole life, and his species, at the end of a thousand years, exactly what it was the first year of that thousand. Why is man alone liable to grow into a dotard? Is it not because he returns, in this, to his primitive state; and that, while the brute, which has acquired nothing and has therefore nothing to lose, still retains the force of instinct, man, who loses, by age or accident, all that his perfectibility had enabled him to gain, falls by this means lower than the brutes themselves? It would be melancholy, were we forced to admit that this distinctive and almost unlimited faculty is the source of all human misfortunes; that it is this which, in time, draws man out of his original state, in which he would have spent his days insensibly in peace and innocence; that it is this faculty, which, successively producing in different ages his discoveries and his errors, his vices and his virtues, makes him at length a tyrant both over himself and over nature.[1] It would be shocking to be obliged to regard as a benefactor the man who first suggested to the Oroonoko Indians the use of the boards they apply to the temples of their children, which secure to them some part at least of their imbecility and original happiness.