by Aristotle
Stature chaste Artemis gave them,
[35] as being able to give what, being a maiden, she herself possessed. When, therefore, a eunuch changes in size, he does not change into the likeness of the male; for the change is not in the direction of physical perfection, but eunuchs increase in size only in respect of height.
37 · Why is it that eunuchs either never suffer from varicose veins, or do so [895a1] less than others? Is it because, by their being castrated, their nature changes into that of persons lacking generative power? Now boys and women lack this power, and neither has varicose veins except women very occasionally.
38 · Why is man better able to utter many voices, while other animals of one [5] and the same species utter only one voice? Has man too really only one voice, but many forms of speech?
39 · And why has man different forms of speech, while the other animals have not? Is it because men in their speech make use of a number of letters, but the other animals employ either none or only two or three consonants? (Now it is [10] consonants combined with vowels that form speech.) Now speaking is signifying something not merely by the voice but by certain conditions of the voice, and not merely to signify pain or pleasure; and it is the letters which regulate these conditions. But children express what they want to say in just the same way as wild beasts; for young children cannot yet make use of the letters in speech.
[15] 40 · Why is it that of all animals man alone is apt to hesitate in his speech? Is it because he is also liable to be dumb, and hesitancy of speech is a form of dumbness, or at any rate the organ of speech is not perfect? Or is it because man partakes more of rational speech, while the other animals only possess voice, and hesitancy of speech, as its name implies, is simply11 being unable to explain one’s meaning continuously?
[20] 41 · Why is it that man more than the other animals is apt to be lame from birth? Is it because the legs of animals are strong (for quadrupeds and birds have bony and sinewy legs), but human legs are fleshy, and so owing to their softness they more easily become damaged through movement? Or is it because in man alone of [25] animals the period of gestation varies? For he may be born after the seventh or the eighth or the tenth month. For the other animals there is one fixed time for coming to perfection without any further delay; but in man the period of delay is long, and so, when the foetus moves, its extremities being soft are more liable to become [30] broken in the longer period.
42 · Why have eunuchs sore and ulcerated legs? Is it because this is also characteristic of women, and eunuchs are effeminate? Or, while this is true, is the cause in women as well this, that the heat has a downward tendency? (Menstruation shows that this is so.) So neither eunuchs nor women grow thick hair, owing to [35] the presence of copious moisture in them.
43 · Why is it that no animal except man suffers from gall-stones? Is it because in beasts of burden and cloven-hoofed animals the ducts of the bladder are wide? Those animals which produce their young alive not immediately but after an interval, like certain of the fishes, never have bladders, but the sediment which [895b1] might form gall-stones is forced into the bowels (as happens also in birds), and so easily passes out with the excrement. But man has a bladder and a stalk to the bladder, which is narrow in proportion to his size; so, because he has this part, the [5] earthy matter is forced into the bladder (and so chamber-pots become discoloured by it) and, owing to the heat in that region, it becomes concocted and thickens still more and remains there and increases owing to the narrowness of the urethra; for the earthy sediment, being unable to make its way out easily, coheres together and [10] forms a gall-stone.
44 · Why is it that beasts of burden and cattle and horned animals and birds do not belch? Is it owing to the dryness of their stomachs? For the moisture is quickly used up and percolates through; whereas belching results when the [15] moisture remains and evaporates. In animals with long manes and tails, owing to the length of their necks, the breath tends to travel downwards, and therefore they generally break wind backwards. Birds and horned animals neither belch nor break wind; and ruminating animals do not belch, because they have several stomachs and the so-called ‘reticulum’; and so the breath finds a passage up and down through [20] many channels, and the moisture is taken up before it can become vaporized and cause either belching or breaking of wind.
45 · Why is it that tame animals are invariably found also in a wild state, but wild animals are not always found also in a tame condition? For even men certainly exist in a wild state in some places, and wild dogs are found in India and [25] horses elsewhere; but lions and leopards and vipers and many other animals are never found in a tame state. Is it because the inferior condition is more easily acquired at first and it is easier to degenerate into it, since it is not the original but the ultimate nature which is difficult to attain to at once? For this reason all tame animals are at first wild rather than tame (for example the child is greedier and [30] more quick-tempered than the man), but physically weaker. So we find the same state of affairs in the products of nature as in those of the arts. For among the latter there are always badly-made objects, and the bad are more numerous than the good, beds for instance and garments and the like; and, where a good object is [35] produced, it is always possible to find also a bad one, but, where a bad object is produced, it is not also possible always to find a good one. This can be seen from an examination of the works of the primitive painters and sculptors; for in their day there was not yet any good painting or sculpture anywhere, but only inferior work. [896a1] So likewise nature always produces inferior specimens and in a greater number, and superior specimens in a smaller number and in some cases not at all. Now the tame is superior and the wild inferior. It is, I suppose, easier for nature—not the primitive nature but that towards which animals develop—to make the good kinds also tame; but the opposite kinds never, or scarcely ever, become tame, and it is only under [5] certain conditions of locality and time that sooner12 or later owing to a general admixture of circumstances all animals can become tame. The same thing happens in plants of all kinds; those which are garden plants are also found in a wild state, but it is impossible for all to be cultivated, but some are so peculiarly conditioned in many respects in their natural soil that, though neglected and left wild, they grow [10] better and more like cultivated plants than those which are carefully tilled in other soil.
46 · Why is it that men have large navels, whereas in the other animals they are inconspicuous? Is it because in the latter, owing to the long period of gestation, [15] they wither off and project outwards and swell all up into sores, and so the navel sometimes even becomes mis-shapen? Now man comes forth from the womb in an imperfect condition, and so his navel comes away still full of moisture and blood. That some animals are perfect and others imperfect at birth is shown by the fact that some animals can fend for themselves at once, but children require looking after.
[20] 47 · Why is it that some animals copulate only once, others frequently, and some only at certain seasons of the year and others at no fixed time? For example, man does so at all times but wild animals only occasionally, and the wild boar only does so once but the domesticated pig frequently. Is it the effect of nourishment and warmth and exercise, since ‘Cypris depends on fullness’? Again, the same species [25] bears young once in some localities but several times in others; for instance, the sheep in Magnesia and Libya have young twice a year. The reason is the prolonged period of gestation; for animals, when their desire is satisfied, feel desire no longer, just as, when they have fed, they no longer desire food. Also animals when pregnant feel less desire for sexual intercourse, because the menstrual purgation does not take place.
[30] 48 · Why is it that men who have widely-spaced teeth are generally short-lived? Is it a sign that the skull is thick? For the brain is weak if it is not well ventilated, and so, being moist, it quickly decays, just as all other things decay if they are not in motion and cannot evaporate. For this reason too man has very thick [35] hair upon
the head, and the male is longer-lived than the female because of the sutures in his skull. But we must next consider length of life in relation to other conditions.
49 · Why then are men long-lived who have a line right across their palms? Is it because animals whose limbs are badly articulated are shortest-lived, aquatic animals for example? And if those which are badly articulated are short-lived, [896b1] clearly those that are well articulated must be the opposite. Now the latter are those in which even those parts are best articulated which are by nature badly articulated; and the inside of the hand is the least well articulated part of the body.
50 · Why is it that man alone squints, or at any rate does so more than any [5] other animal? Is it because he alone, or more than other animals, is liable to seizure in infancy, when distortion of the vision also always begins?
51 · Why is man more affected by smoke than other animals? Is it because he is most prone to shed tears, and shedding tears is one of the effects of smoke?
52 · Why does horse take pleasure in and desire horse, and man take [10] pleasure in man, and generally why do animals delight in animals which are akin to and like them? For every13 animal is not equally beautiful, and desire is of the beautiful. The beautiful then ought to be pleasanter; but in actual fact it is truer that not every kind of beauty is pleasant,14 nor are pleasure and the beautiful equally pleasing to all men; for example, one creature takes greater pleasure in eating or drinking and another in sexual intercourse. The question why each [15] creature prefers and takes greatest pleasure in sexual intercourse with a creature that is akin to it is dealt with elsewhere; but to add that what is akin is also most beautiful is not true. But we regard as beautiful that which is pleasing with a view to sexual intercourse, because, when we feel desire, we delight in looking upon the [20] object of our desire. And indeed the same thing happens in other forms of desire; for example, when we are thirsty we take greater pleasure in the sight of something to drink. So that which is beautiful in view of a certain use of it seems to be most pleasant because we particularly desire it. (But this is not true of that which is beautiful in itself, as is proved by the fact that even grown men appear to us [25] beautiful, when we look at them without15 any idea of sexual intercourse. Do they then appear beautiful in such a way as to give our eyes more pleasure than those who are of an age for sexual intercourse? There is no reason why they should not, provided we do not happen to feel a desire for sexual intercourse.) Thus something to drink appears to us as particularly good; for, if we happen to be thirsty, we shall see it with considerable pleasure.
53 · Why is it that in man the front of the body is more thickly covered with hair than the posterior portion, but in quadrupeds the posterior part is hairiest? Is it [30] because all two-footed animals have the front part of the body more thickly covered? For the birds resemble man in this respect. Or is nature always accustomed to protect the weaker parts and is every creature weak in some respect? [35] Now in all quadrupeds the posterior portions are weaker than the front parts owing to their position; for they are more liable to suffer from cold and heat; but in man the front portions of the body are weaker and suffer likewise under these conditions.
[897a1] 54 · Why is it that man sneezes more than any other animal? Is it because he also suffers most from running at the nose? The reason for this is that, the heat being situated in the region of the heart and being naturally disposed to rise upwards, in the other animals its natural direction is towards the shoulders and [5] thence, splitting up owing to refraction, it travels partly into the neck and head and partly into the backbone and flanks, because these parts are all in the same straight line and parallel to the ground on which the animal stands. Now the heat,16 as it travels along, distributes the moisture uniformly to these parts alike; for the [10] moisture follows the heat. Four-footed animals therefore do not suffer either much from running at the nose or sneeze; for sneezing is due to the rush either of a mass of breath, when moisture evaporates more quickly than the body, or of unconcocted moisture (hence it precedes a cold in the head);17 and these forms of moisture are [15] not found in the other animals, because the rush of heat is equally distributed between the fore and hind parts of an animal. Man being naturally, like the plants, at a right angle to the ground on which he stands, the result is that a very copious and violent rush of heat takes place in the direction of the head, and the heat in its course thither rarefies and heats the ducts in the region of the head. Now these [20] ducts being in this condition are better able to receive the moisture than those leading downwards from the heart. When, therefore, a man happens to have become in too moist a condition and to have been cooled off externally,18 the result is that the heat obtaining nourishment and collecting within increases, and as it does [25] so it is carried to the head and the ducts there. Into these the moisture, which is thin and unconcocted, follows the heat and fills them up and causes cold in the head and likewise sneezing. For at the beginning of a cold the heat, being carried along in advance of the moisture and inflating the ducts, causes sneezing by the expulsion of [30] the breath and by the drawing off19 of those humours which are light and pungent. Hence it happens that after sneezing from a cold in the head one wipes away watery matter. These all having been set in motion, the continuous and solid20 humours follow closely upon them and block up the ducts in the region of the head and [35] nostrils. If they become swollen and distended, they cause pain in the region of the head. That the ducts are blocked is shown by the fact that no breath can pass out through them;21 so those who suffer from running at the nose neither sneeze nor can they use their sense of smell. Sneezing unaccompanied by running at the nose is due to the same causes, but has some slight and insignificant origin; and so the humours, being collected by the heat and vaporized by it owing to their small mass, are [897b1] precipitated down the nostrils. The noise made by the breath is due quite as much to the violence of its rush as to its quantity. For the heat, being carried along in a direct line to the brain and rushing into it, is refracted into the nostrils, because the ducts [5] there lead out from the brain. The rush made by the breath in breaking out into the nostrils, being unnatural, is consequently violent, and therefore makes loud noises. Amongst the other animals birds are most liable to running at the nose, because [10] they most resemble man in form; but they are less liable to it than man, because they usually hold their heads down, since they derive their food from the ground.
55 · Why are marine animals larger and better nourished than land animals? Is it because the sun consumes the outer surface of the earth and takes the [15] nourishment out of it? (For this reason too those animals which are enclosed in the earth are better nourished.) Marine animals then are free from all these disadvantages.
56 · Why is it that the other animals provide themselves more often with dry than with moist food, but man takes more moist than dry nourishment? Is it [20] because man is naturally very hot and therefore requires most cooling?
57 · Why is it that eunuchs do not become bald? Is it because they have a large amount of brain-matter? Now this is the result of their not having sexual intercourse with women; for the semen passes from the brain through the spine. For [25] this reason too bulls which have been castrated appear to have large horns after castration. For the same reason also, apparently, women and children are not bald.
58 · Why is it that some animals are able to feed themselves directly after [30] birth, while others cannot? Are those who can do so the shorter-lived among those animals which are capable of memory? It is for this reason that they always die sooner.
59 · Why does man produce more moist than dry excrement, but horses and asses more dry than moist? Is it because the latter animals take more dry food, [35] whereas man takes more moist than dry nourishment? For all excrement comes from food, and a greater amount of food produces a greater quantity of excrement. Some animals then take more moist food, others more dry food, because some are naturally dry and others moist. Animals then which are natur
ally dry feel more [898a1] desire for moist food, since they require it more; but those which are naturally moist desire dry food, for they stand more in need of it.
60 · Why is it that birds and men and the courageous animals have hard frames? Is it because high spirit is accompanied by bodily heat, since fear is a [5] process of cooling? Those then whose blood is hot are also courageous and high-spirited; for the blood gives them sustenance. Plants too which are watered with warm water become harder.
61 · Why is it that quadrupeds of a small size most often give birth to [10] monstrosities, whereas man and the larger quadrupeds, such as horses and asses, do so less often? Is it because the small quadrupeds, such as dogs, pigs, goats, and sheep, have much more abundant progeny than the larger animals, which either always or usually produce only one offspring at a time? Monstrosities come into [15] being when the semen becomes confused and disturbed either in the emission of the seminal fluid or in the mingling which takes place in the uterus of the female. So birds too produce monstrosities; for they lay twin eggs, and their monstrosities are born from such eggs in which the yolk is not separated by the membrane.