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Book II Chapter 3
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Thus, every hypothesis of channels as an explanation of natural functioning is perfect nonsense. For, if there were not an inborn1 faculty2 given by Nature to each one of the organs at the very beginning, then animals could not continue to live even for a few days, far less for the number of years which they actually do. For let us suppose they were under no guardianship3, lacking in creative ingenuity4 and forethought; let us suppose they were steered5 only by material forces, and not by any special faculties6 (the one attracting what is proper to it, another rejecting what is foreign, and yet another causing alteration7 and adhesion of the matter destined8 to nourish it); if we suppose this, I am sure it would be ridiculous for us to discuss natural, or, still more, psychical9, activities — or, in fact, life as a whole.

For there is not a single animal which could live or endure for the shortest time if, possessing within itself so many different parts, it did not employ faculties which were attractive of what is appropriate, eliminative of what is foreign, and alterative10 of what is destined for nutrition. On the other hand, if we have these faculties, we no longer need channels, little or big, resting on an unproven hypothesis, for explaining the secretion11 of urine and bile, and the conception of some favourable12 situation (in which point alone Erasistratus shows some common sense, since he does regard all the parts of the body as having been well and truly placed and shaped by Nature).

But let us suppose he remained true to his own statement that Nature is “artistic13”— this Nature which, at the beginning, well and truly shaped and disposed all the parts of the animal, and, after carrying out this function (for she left nothing undone), brought it forward to the light of day, endowed with certain faculties necessary for its very existence, and, thereafter, gradually increased it until it reached its due size. If he argued consistently on this principle, I fail to see how he can continue to refer natural functions to the smallness or largeness of canals, or to any other similarly absurd hypothesis. For this Nature which shapes and gradually adds to the parts is most certainly extended throughout their whole substance. Yes indeed, she shapes and nourishes and increases them through and through, not on the outside only. For Praxiteles and Phidias and all the other statuaries used merely to decorate their material on the outside, in so far as they were able to touch it; but its inner parts they left unembellished, unwrought, unaffected by art or forethought, since they were unable to penetrate15 therein and to reach and handle all portions of the material. It is not so, however, with Nature. Every part of a bone she makes bone, every part of the flesh she makes flesh, and so with fat and all the rest; there is no part which she has not touched, elaborated, and embellished14. Phidias, on the other hand, could not turn wax into ivory and gold, nor yet gold into wax: for each of these remains16 as it was at the commencement, and becomes a perfect statue simply by being clothed externally in a form and artificial shape. But Nature does not preserve the original character of any kind of matter; if she did so, then all parts of the animal would be blood — that blood, namely, which flows to the semen from the impregnated female and which is, so to speak, like the statuary’s wax, a single uniform matter, subjected to the artificer. From this blood there arises no part of the animal which is as red and moist [as blood is], for bone, artery17, vein18, nerve, cartilage, fat, gland19, membrane20, and marrow21 are not blood, though they arise from it.

I would then ask Erasistratus himself to inform me what the altering, coagulating, and shaping agent is. He would doubtless say, “Either Nature or the semen,” meaning the same thing in both cases, but explaining it by different devices. For that which was previously22 semen, when it begins to procreate and to shape the animal, becomes, so to say, a special nature. For in the same way that Phidias possessed23 the faculties of his art even before touching24 his material, and then activated25 these in connection with this material (for every faculty remains inoperative in the absence of its proper material), so it is with the semen: its faculties it possessed from the beginning,10 while its activities it does not receive from its material, but it manifests them in connection therewith.

And, of course, if it were to be overwhelmed with a great quantity of blood, it would perish, while if it were to be entirely26 deprived of blood it would remain inoperative and would not turn into a nature. Therefore, in order that it may not perish, but may become a nature in place of semen, there must be an afflux to it of a little blood — or, rather, one should not say a little, but a quantity commensurate with that of the semen. What is it then that measures the quantity of this afflux? What prevents more from coming? What ensures against a deficiency? What is this third overseer of animal generation that we are to look for, which will furnish the semen with a due amount of blood? What would Erasistratus have said if he had been alive, and had been asked this question? Obviously, the semen itself. This, in fact, is the artificer analogous27 with Phidias, whilst the blood corresponds to the statuary’s wax.

Now, it is not for the wax to discover for itself how much of it is required; that is the business of Phidias. Accordingly the artificer will draw to itself as much blood as it needs. Here, however, we must pay attention and take care not unwittingly to credit the semen with reason and intelligence; if we were to do this, we would be making neither semen nor a nature, but an actual living animal. And if we retain these two principles — that of proportionate attraction and that of the non-participation of intelligence — we shall ascribe to the semen a faculty for attracting blood similar to that possessed by the lodestone for iron. Here, then, again, in the case of the semen, as in so many previous instances, we have been compelled to acknowledge some kind of attractive faculty.

And what is the semen? Clearly the active principle of the animal, the material principle being the menstrual blood. Next, seeing that the active principle employs this faculty primarily, therefore, in order that any one of the things fashioned by it may come into existence, it [the principle] must necessarily be possessed of its own faculty. How, then, was Erasistratus unaware28 of it, if the primary function of the semen be to draw to itself a due proportion of blood? Now, this fluid would be in due proportion if it were so thin and vaporous, that, as soon as it was drawn29 like dew into every part of the semen, it would everywhere cease to display its own particular character; for so the semen will easily dominate and quickly assimilate it — in fact, will use it as food. It will then, I imagine, draw to itself a second and a third quantum, and thus by feeding it acquires for itself considerable bulk and quantity. In fact, the alterative faculty has now been discovered as well, although about this also has not written a word. And, thirdly the shaping faculty will become evident, by virtue30 of which the semen firstly surrounds itself with a thin membrane like a kind of superficial condensation31; this is what was described by Hippocrates in the sixth-day birth, which, according to his statement, fell from the singing-girl and resembled the pellicle of an egg. And following this all the other stages will occur, such as are described by him in his work “On the Child’s Nature.”

But if each of the parts formed were to remain as small as when it first came into existence, of what use would that be? They have, then, to grow. Now, how will they grow? By becoming extended in all directions and at the same time receiving nourishment32. And if you will recall what I previously said about the bladder which the children blew up and rubbed, you will also understand my meaning better as expressed in what I am now about to say.

Imagine the heart to be, at the beginning, so small as to differ in no respect from a millet-seed, or, if you will, a bean; and consider how otherwise it is to become large than by being extended in all directions and acquiring nourishment throughout its whole substance, in the way that, as I showed a short while ago, the semen is nourished. But even this was unknown to Erasistratus — the man who sings the artistic skill of Nature! He imagines that animals grow like webs, ropes, sacks, or baskets, each of which has, woven on to its end or margin33, other material similar to that of which it was originally composed.

But this, most sapient34 sir, is not growth, but genesis! For a bag, sack, garment, house, ship, or the like is said to be still coming into existence [undergoing genesis] so long as the appropriate form for the sake of which it is being constructed by the artificer is still incomplete. Then, when does it grow? Only when the basket, being complete, with a bottom, a mouth, and a belly35, as it were, as well as the intermediate parts, now becomes larger in all these respects. “And how can this happen?” someone will ask. Only by our basket suddenly becoming an animal or a plant; for growth belongs to living things alone. Possibly you imagine that a house grows when it is being built, or a basket when being plated, or a garment when being woven? It is not so, however. Growth belongs to that which has already been completed in respect to its form, whereas the process by which that which is still becoming attains36 its form is termed not growth but genesis. That which is, grows, while that which is not, becomes.

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1 inborn R4wyc     
adj.天生的,生来的,先天的
参考例句:
  • He is a man with an inborn love of joke.他是一个生来就喜欢开玩笑的人。
  • He had an inborn talent for languages.他有语言天分。
2 faculty HhkzK     
n.才能;学院,系;(学院或系的)全体教学人员
参考例句:
  • He has a great faculty for learning foreign languages.他有学习外语的天赋。
  • He has the faculty of saying the right thing at the right time.他有在恰当的时候说恰当的话的才智。
3 guardianship ab24b083713a2924f6878c094b49d632     
n. 监护, 保护, 守护
参考例句:
  • They had to employ the English language in face of the jealous guardianship of Britain. 他们不得不在英国疑忌重重的监护下使用英文。
  • You want Marion to set aside her legal guardianship and give you Honoria. 你要马丽恩放弃她的法定监护人资格,把霍诺丽娅交给你。
4 ingenuity 77TxM     
n.别出心裁;善于发明创造
参考例句:
  • The boy showed ingenuity in making toys.那个小男孩做玩具很有创造力。
  • I admire your ingenuity and perseverance.我钦佩你的别出心裁和毅力。
5 steered dee52ce2903883456c9b7a7f258660e5     
v.驾驶( steer的过去式和过去分词 );操纵;控制;引导
参考例句:
  • He steered the boat into the harbour. 他把船开进港。
  • The freighter steered out of Santiago Bay that evening. 那天晚上货轮驶出了圣地亚哥湾。 来自《简明英汉词典》
6 faculties 066198190456ba4e2b0a2bda2034dfc5     
n.能力( faculty的名词复数 );全体教职员;技巧;院
参考例句:
  • Although he's ninety, his mental faculties remain unimpaired. 他虽年届九旬,但头脑仍然清晰。
  • All your faculties have come into play in your work. 在你的工作中,你的全部才能已起到了作用。 来自《简明英汉词典》
7 alteration rxPzO     
n.变更,改变;蚀变
参考例句:
  • The shirt needs alteration.这件衬衣需要改一改。
  • He easily perceived there was an alteration in my countenance.他立刻看出我的脸色和往常有些不同。
8 destined Dunznz     
adj.命中注定的;(for)以…为目的地的
参考例句:
  • It was destined that they would marry.他们结婚是缘分。
  • The shipment is destined for America.这批货物将运往美国。
9 psychical 8d18cc3bc74677380d4909fef11c68da     
adj.有关特异功能现象的;有关特异功能官能的;灵魂的;心灵的
参考例句:
  • Conclusion: The Liuhe-lottery does harm to people, s psychical health and should be for bidden. 结论:“六合彩”赌博有害人们心理卫生,应予以严禁。 来自互联网
10 alterative e5486ca589b9c360176ebd9c81d96631     
adj.(趋于)改变的,变质的,使体质逐渐康复的n.变质剂,体质改善疗法
参考例句:
  • The more alterative, the more difficult the choice. 选择越多,愈难抉择。 来自互联网
  • This paper propose a novel alterative step LMS auto-adapted filter algorithm based on mean squared-error estimation. 介绍了一种基于均方误差估计的新变步长LMS自适应滤波算法。 来自互联网
11 secretion QDozG     
n.分泌
参考例句:
  • Is there much secretion from your eyes?你眼里的分泌物多吗?
  • In addition,excessive secretion of oil,water scarcity are also major factors.除此之外,油脂分泌过盛、缺水也都是主要因素。
12 favourable favourable     
adj.赞成的,称赞的,有利的,良好的,顺利的
参考例句:
  • The company will lend you money on very favourable terms.这家公司将以非常优惠的条件借钱给你。
  • We found that most people are favourable to the idea.我们发现大多数人同意这个意见。
13 artistic IeWyG     
adj.艺术(家)的,美术(家)的;善于艺术创作的
参考例句:
  • The picture on this screen is a good artistic work.这屏风上的画是件很好的艺术品。
  • These artistic handicrafts are very popular with foreign friends.外国朋友很喜欢这些美术工艺品。
14 embellished b284f4aedffe7939154f339dba2d2073     
v.美化( embellish的过去式和过去分词 );装饰;修饰;润色
参考例句:
  • The door of the old church was embellished with decorations. 老教堂的门是用雕饰美化的。 来自《简明英汉词典》
  • The stern was embellished with carvings in red and blue. 船尾饰有红色和蓝色的雕刻图案。 来自辞典例句
15 penetrate juSyv     
v.透(渗)入;刺入,刺穿;洞察,了解
参考例句:
  • Western ideas penetrate slowly through the East.西方观念逐渐传入东方。
  • The sunshine could not penetrate where the trees were thickest.阳光不能透入树木最浓密的地方。
16 remains 1kMzTy     
n.剩余物,残留物;遗体,遗迹
参考例句:
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
17 artery 5ekyE     
n.干线,要道;动脉
参考例句:
  • We couldn't feel the changes in the blood pressure within the artery.我们无法感觉到动脉血管内血压的变化。
  • The aorta is the largest artery in the body.主动脉是人体中的最大动脉。
18 vein fi9w0     
n.血管,静脉;叶脉,纹理;情绪;vt.使成脉络
参考例句:
  • The girl is not in the vein for singing today.那女孩今天没有心情唱歌。
  • The doctor injects glucose into the patient's vein.医生把葡萄糖注射入病人的静脉。
19 gland qeGzu     
n.腺体,(机)密封压盖,填料盖
参考例句:
  • This is a snake's poison gland.这就是蛇的毒腺。
  • Her mother has an underactive adrenal gland.她的母亲肾上腺机能不全。
20 membrane H7ez8     
n.薄膜,膜皮,羊皮纸
参考例句:
  • A vibrating membrane in the ear helps to convey sounds to the brain.耳膜的振动帮助声音传送到大脑。
  • A plastic membrane serves as selective diffusion barrier.一层塑料薄膜起着选择性渗透屏障的作用。
21 marrow M2myE     
n.骨髓;精华;活力
参考例句:
  • It was so cold that he felt frozen to the marrow. 天气太冷了,他感到寒冷刺骨。
  • He was tired to the marrow of his bones.他真是累得筋疲力尽了。
22 previously bkzzzC     
adv.以前,先前(地)
参考例句:
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
23 possessed xuyyQ     
adj.疯狂的;拥有的,占有的
参考例句:
  • He flew out of the room like a man possessed.他像着了魔似地猛然冲出房门。
  • He behaved like someone possessed.他行为举止像是魔怔了。
24 touching sg6zQ9     
adj.动人的,使人感伤的
参考例句:
  • It was a touching sight.这是一幅动人的景象。
  • His letter was touching.他的信很感人。
25 activated c3905c37f4127686d512a7665206852e     
adj. 激活的 动词activate的过去式和过去分词
参考例句:
  • The canister is filled with activated charcoal.蒸气回收罐中充满了活性炭。
26 entirely entirely     
ad.全部地,完整地;完全地,彻底地
参考例句:
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
27 analogous aLdyQ     
adj.相似的;类似的
参考例句:
  • The two situations are roughly analogous.两种情況大致相似。
  • The company is in a position closely analogous to that of its main rival.该公司与主要竞争对手的处境极为相似。
28 unaware Pl6w0     
a.不知道的,未意识到的
参考例句:
  • They were unaware that war was near. 他们不知道战争即将爆发。
  • I was unaware of the man's presence. 我没有察觉到那人在场。
29 drawn MuXzIi     
v.拖,拉,拔出;adj.憔悴的,紧张的
参考例句:
  • All the characters in the story are drawn from life.故事中的所有人物都取材于生活。
  • Her gaze was drawn irresistibly to the scene outside.她的目光禁不住被外面的风景所吸引。
30 virtue BpqyH     
n.德行,美德;贞操;优点;功效,效力
参考例句:
  • He was considered to be a paragon of virtue.他被认为是品德尽善尽美的典范。
  • You need to decorate your mind with virtue.你应该用德行美化心灵。
31 condensation YYyyr     
n.压缩,浓缩;凝结的水珠
参考例句:
  • A cloud is a condensation of water vapour in the atmosphere.云是由大气中的水蒸气凝结成的。
  • He used his sleeve to wipe the condensation off the glass.他用袖子擦掉玻璃上凝结的水珠。
32 nourishment Ovvyi     
n.食物,营养品;营养情况
参考例句:
  • Lack of proper nourishment reduces their power to resist disease.营养不良降低了他们抵抗疾病的能力。
  • He ventured that plants draw part of their nourishment from the air.他大胆提出植物从空气中吸收部分养分的观点。
33 margin 67Mzp     
n.页边空白;差额;余地,余裕;边,边缘
参考例句:
  • We allowed a margin of 20 minutes in catching the train.我们有20分钟的余地赶火车。
  • The village is situated at the margin of a forest.村子位于森林的边缘。
34 sapient VYExH     
adj.有见识的,有智慧的
参考例句:
  • If you follow her sapient advice,you will be sure to succeed.如你遵照她明智的建议,你一定能够成功。
  • It was no just and sapient counsellor,in its last analysis.归根结底,这也不是一个聪明正直的顾问。
35 belly QyKzLi     
n.肚子,腹部;(像肚子一样)鼓起的部分,膛
参考例句:
  • The boss has a large belly.老板大腹便便。
  • His eyes are bigger than his belly.他眼馋肚饱。
36 attains 7244c7c9830392f8f3df1cb8d96b91df     
(通常经过努力)实现( attain的第三人称单数 ); 达到; 获得; 达到(某年龄、水平、状况)
参考例句:
  • This is the period at which the body attains maturity. 这是身体发育成熟的时期。
  • The temperature a star attains is determined by its mass. 恒星所达到的温度取决于它的质量。


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