Book I chapter 12

It is quite clear, therefore, that nutrition must necessarily be a process of assimilation of that which is nourishing to that which is being nourished. Some, however, say that this assimilation does not occur in reality, but is merely apparent; these are the people who think that Nature is not artistic², that she does not show forethought for the animal’s welfare, and that she has absolutely no native powers whereby she alters some substances, attracts others, and discharges others.

Now, speaking generally, there have arisen the following two sects⁴ in medicine and philosophy among those who have made any definite pronouncement regarding Nature. I speak, of course, of such of them as know what they are talking about, and who realize the logical sequence of their hypotheses, and stand by them; as for those who cannot understand even this, but who simply talk any nonsense that comes to their tongues, and who do not remain definitely attached either to one sect³ or the other — such people are not even worth mentioning.

What, then, are these sects, and what are the logical consequences of their hypotheses? The one class supposes that all substance which is subject to genesis and destruction is at once continuous and susceptible⁵ of alteration⁶. The other school assumes substance to be unchangeable, unalterable, and subdivided⁷ into fine particles, which are separated from one another by empty spaces.

All people, therefore, who can appreciate the logical sequence of an hypothesis hold that, according to the second teaching, there does not exist any substance or faculty⁸ peculiar⁹ either to Nature or to Soul, but that these result from the way in which the primary corpuscles, which are unaffected by change, come together. According to the first-mentioned teaching, on the other hand, Nature is not posterior to the corpuscles, but is a long way prior to them and older than they; and therefore in their view it is Nature which puts together the bodies both of plants and animals; and this she does by virtue¹⁰ of certain faculties¹¹ which she possesses — these being, on the one hand, attractive and assimilative of what is appropriate, and, on the other, of what is foreign. Further, she skilfully¹² moulds everything during the stage of genesis; and she also provides for the creatures after birth, employing here other faculties again, namely, one of affection and forethought for offspring, and one of sociability¹³ and friendship for kindred. According to the other school, none of these things exist in the natures [of living things], nor is there in the soul any original innate¹⁴ idea, whether of agreement or difference, of separation or synthesis, of justice or injustice¹⁵, of the beautiful or ugly; all such things, they say, arise in us from sensation and through sensation, and animals are steered¹⁶ by certain images and memories.

Some of these people have even expressly declared that the soul possesses no reasoning faculty, but that we are led like cattle by the impression of our senses, and are unable to refuse or dissent¹⁷ from anything. In their view, obviously, courage, wisdom, temperance, and self-control are all mere¹ nonsense, we do not love either each other or our offspring, nor do the gods care anything for us. This school also despises dreams, birds, omens¹⁸, and the whole of astrology, subjects with which we have dealt at greater length in another work, in which we discuss the views of Asclepiades the physician. Those who wish to do so may familiarize themselves with these arguments, and they may also consider at this point which of the two roads lying before us is the better one to take. Hippocrates took the first-mentioned. According to this teaching, substance is one and is subject to alteration; there is a consensus¹⁹ in the movements of air and fluid throughout the whole body; Nature acts throughout in an artistic and equitable²⁰ manner, having certain faculties, by virtue of which each part of the body draws to itself the juice which is proper to it, and, having done so, attaches it to every portion of itself, and completely assimilates it; while such part of the juice as has not been mastered, and is not capable of undergoing complete alteration and being assimilated to the part which is being nourished, is got rid of by yet another (an expulsive) faculty.

1 mere   

adj.纯粹的；仅仅，只不过

参考例句：

• That is a mere repetition of what you said before.那不过是重复了你以前讲的话。
• It's a mere waste of time waiting any longer.再等下去纯粹是浪费时间。

2 artistic   

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。

3 sect   

n.派别，宗教，学派，派系

参考例句：

• When he was sixteen he joined a religious sect.他16岁的时候加入了一个宗教教派。
• Each religious sect in the town had its own church.该城每一个宗教教派都有自己的教堂。

4 sects   

n.宗派，教派( sect的名词复数 )

参考例句：

• Members of these sects are ruthlessly persecuted and suppressed. 这些教派的成员遭到了残酷的迫害和镇压。 来自《简明英汉词典》
• He had subdued the religious sects, cleaned up Saigon. 他压服了宗教派别，刷新了西贡的面貌。 来自辞典例句

5 susceptible   

adj.过敏的，敏感的；易动感情的，易受感动的

参考例句：

• Children are more susceptible than adults.孩子比成人易受感动。
• We are all susceptible to advertising.我们都易受广告的影响。

6 alteration   

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。

7 subdivided   

再分，细分( subdivide的过去式和过去分词 )

参考例句：

• The compound was subdivided into four living areas. 那个区域被划分成4个居住小区。
• This part of geologic calendar has not been satisfactorily subdivided. 这部分地质年代表还没有令人满意地再细分出来。

8 faculty   

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。

9 peculiar   

adj.古怪的，异常的；特殊的，特有的

参考例句：

• He walks in a peculiar fashion.他走路的样子很奇特。
• He looked at me with a very peculiar expression.他用一种很奇怪的表情看着我。

10 virtue   

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。

11 faculties   

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》

12 skilfully   

adv. (美skillfully)熟练地

参考例句：

• Hall skilfully weaves the historical research into a gripping narrative. 霍尔巧妙地把历史研究揉进了扣人心弦的故事叙述。
• Enthusiasm alone won't do. You've got to work skilfully. 不能光靠傻劲儿，得找窍门。

13 sociability   

n.好交际，社交性，善于交际

参考例句：

• A fire of withered pine boughs added sociability to the gathering. 枯松枝生起的篝火给这次聚合增添了随和、友善的气氛。 来自辞典例句
• A certain sociability degree is a specific character of most plants. 特定的群集度是多数植物特有的特征。 来自辞典例句

14 innate   

adj.天生的，固有的，天赋的

参考例句：

• You obviously have an innate talent for music.你显然有天生的音乐才能。
• Correct ideas are not innate in the mind.人的正确思想不是自己头脑中固有的。

15 injustice   

n.非正义，不公正，不公平，侵犯（别人的）权利

参考例句：

• They complained of injustice in the way they had been treated.他们抱怨受到不公平的对待。
• All his life he has been struggling against injustice.他一生都在与不公正现象作斗争。

16 steered   

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》

17 dissent   

n./v.不同意，持异议

参考例句：

• It is too late now to make any dissent.现在提出异议太晚了。
• He felt her shoulders gave a wriggle of dissent.他感到她的肩膀因为不同意而动了一下。

18 omens   

n.前兆，预兆( omen的名词复数 )

参考例句：

• The omens for the game are still not propitious. 这场比赛仍不被看好。 来自辞典例句
• Such omens betide no good. 这种征兆预示情况不妙。 来自辞典例句

19 consensus   

n.(意见等的)一致，一致同意，共识

参考例句：

• Can we reach a consensus on this issue?我们能在这个问题上取得一致意见吗？
• What is the consensus of opinion at the afternoon meeting?下午会议上一致的意见是什么？

20 equitable   

adj.公平的；公正的

参考例句：

• This is an equitable solution to the dispute. 这是对该项争议的公正解决。
• Paying a person what he has earned is equitable. 酬其应得,乃公平之事。