After I had studied science and particularly biological science for some years, I became a teacher in a school for boys. I found it necessary to supplement my untutored conception of teaching method by a more systematic² knowledge of its principles and methods, and I took the courses for the diplomas of Licentiate and Fellow of the London College of Preceptors which happened to be convenient for me. These courses included some of the more elementary aspects of psychology³ and logic¹ and set me thinking and reading further. From the first, Logic as it was presented to me impressed me as a system of ideas and methods remote and secluded⁴ from the world of fact in which I lived and with which I had to deal. As it came to me in the ordinary textbooks, it presented itself as the science of inference using the syllogism⁵ as its principal instrument. Now I was first struck by the fact that while my teachers in Logic seemed to be assuring me I always thought in this form:—

“M is P,
S is M,
S is P,”

the method of my reasoning was almost always in this form:—

“S1 is more or less P,
S2 is very similar to S1,
S2 is very probably but not certainly more or less P.
Let us go on that assumption and see how it works.”

That is to say, I was constantly reasoning by analogy and applying verification. So far from using the syllogistic⁶ form confidently, I habitually⁷ distrusted it as anything more than a test of consistency⁸ in statement. But I found the textbooks of logic disposed to ignore my customary method of reasoning altogether or to recognise it only where S1 and S2 could be lumped together under a common name. Then they put it something after this form as Induction:—

“S1, S2, S3, and S4 are P
S1 + S2 + S3 + S4 + . . . are all S

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1 logic
n.逻辑(学)；逻辑性
参考例句：
What sort of logic is that?这是什么逻辑？ I don't follow the logic of your argument.我不明白你的论点逻辑性何在。

2 systematic
adj.有系统的，有计划的，有方法的
参考例句：
The way he works isn't very systematic.他的工作不是很有条理。 The teacher made a systematic work of teaching.这个教师进行系统的教学工作。

3 psychology
n.心理，心理学，心理状态
参考例句：
She has a background in child psychology.她受过儿童心理学的教育。 He studied philosophy and psychology at Cambridge.他在剑桥大学学习哲学和心理学。

4 secluded
adj.与世隔绝的；隐退的；偏僻的v.使隔开，使隐退( seclude的过去式和过去分词)
参考例句：
Some people like to strip themselves naked while they have a swim in a secluded place. 一些人当他们在隐蔽的地方游泳时，喜欢把衣服脱光。 来自《简明英汉词典》 This charming cottage dates back to the 15th century and is as pretty as a picture, with its thatched roof and secluded garden. 这所美丽的村舍是15世纪时的建筑，有茅草房顶和宁静的花园，漂亮极了，简直和画上一样。 来自《简明英汉词典》

5 syllogism
n.演绎法，三段论法
参考例句：
The ramifications or the mystery of a syllogism can become a weariness and a bore.三段论证法的分歧或者神秘会变成一种无聊、一种麻烦。 The unexpected bursts forth from the syllogism.三段论里常出岔子。

6 syllogistic
adj.三段论法的，演绎的，演绎性的
参考例句：

7 habitually
ad.习惯地，通常地
参考例句：
The pain of the disease caused him habitually to furrow his brow. 病痛使他习惯性地紧皱眉头。 Habitually obedient to John, I came up to his chair. 我已经习惯于服从约翰，我来到他的椅子跟前。

8 consistency
n.一贯性，前后一致，稳定性；(液体的)浓度
参考例句：
Your behaviour lacks consistency.你的行为缺乏一贯性。 We appreciate the consistency and stability in China and in Chinese politics.我们赞赏中国及其政策的连续性和稳定性。

9 postulates
v.假定，假设( postulate的第三人称单数 )
参考例句：
They proclaimed to be eternal postulates of reason and justice. 他们宣称这些原则是理性和正义的永恒的要求。 来自辞典例句 The school building programme postulates an increase in educational investment. 修建校舍的计画是在增加教育经费的前提下拟定的。 来自辞典例句

10 disabused
v.去除…的错误想法( disabuse的过去式和过去分词 )；使醒悟
参考例句：

11 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。

12 professed
公开声称的，伪称的，已立誓信教的
参考例句：
These, at least, were their professed reasons for pulling out of the deal. 至少这些是他们自称退出这宗交易的理由。 Her manner professed a gaiety that she did not feel. 她的神态显出一种她并未实际感受到的快乐。

13 investigation
n.调查，调查研究
参考例句：
In an investigation,a new fact became known, which told against him.在调查中新发现了一件对他不利的事实。 He drew the conclusion by building on his own investigation.他根据自己的调查研究作出结论。

14 permeated
弥漫( permeate的过去式和过去分词 )； 遍布； 渗入； 渗透
参考例句：
The smell of leather permeated the room. 屋子里弥漫着皮革的气味。 His public speeches were permeated with hatred of injustice. 在他对民众的演说里，充满了对不公正的愤慨。

15 inaccessible
adj.达不到的，难接近的
参考例句：
This novel seems to me among the most inaccessible.这本书对我来说是最难懂的小说之一。 The top of Mount Everest is the most inaccessible place in the world.珠穆朗玛峰是世界上最难到达的地方。

16 distinguished
adj.卓越的，杰出的，著名的
参考例句：
Elephants are distinguished from other animals by their long noses.大象以其长长的鼻子显示出与其他动物的不同。 A banquet was given in honor of the distinguished guests.宴会是为了向贵宾们致敬而举行的。

17 specimen
n.样本，标本
参考例句：
You'll need tweezers to hold up the specimen.你要用镊子来夹这标本。 This specimen is richly variegated in colour.这件标本上有很多颜色。

18 specimens
n.样品( specimen的名词复数 )；范例；（化验的）抽样；某种类型的人
参考例句：
Astronauts have brought back specimens of rock from the moon. 宇航员从月球带回了岩石标本。 The traveler brought back some specimens of the rocks from the mountains. 那位旅行者从山上带回了一些岩石标本。 来自《简明英汉词典》

19 crimson
n./adj.深(绯)红色(的)；vi.脸变绯红色
参考例句：
She went crimson with embarrassment.她羞得满脸通红。 Maple leaves have turned crimson.枫叶已经红了。

20 vaguely
adv.含糊地，暖昧地
参考例句：
He had talked vaguely of going to work abroad.他含糊其词地说了到国外工作的事。 He looked vaguely before him with unseeing eyes.他迷迷糊糊的望着前面，对一切都视而不见。

21 miraculous
adj.像奇迹一样的，不可思议的
参考例句：
The wounded man made a miraculous recovery.伤员奇迹般地痊愈了。 They won a miraculous victory over much stronger enemy.他们战胜了远比自己强大的敌人，赢得了非凡的胜利。

22 cumber
v.拖累，妨碍；n.妨害；拖累
参考例句：
She was cumbered with house hold cares.她被家务事拖累。 We shall not cumber our thought with his reproaches.我们不应该因为他的责备而阻止我们的思想。

23 straightforward
adj.正直的，坦率的；易懂的，简单的
参考例句：
A straightforward talk is better than a flowery speech.巧言不如直说。 I must insist on your giving me a straightforward answer.我一定要你给我一个直截了当的回答。

24 unlimited
adj.无限的，不受控制的，无条件的
参考例句：
They flew over the unlimited reaches of the Arctic.他们飞过了茫茫无边的北极上空。 There is no safety in unlimited technological hubris.在技术方面自以为是会很危险。

25 delude
vt.欺骗；哄骗
参考例句：
You won't delude him into believing it.你不能诱使他相信此事。 Don't delude yourself into believing that she will marry you.不要自欺，别以为她会嫁给你。

26 distinctive
adj.特别的，有特色的，与众不同的
参考例句：
She has a very distinctive way of walking.她走路的样子与别人很不相同。 This bird has several distinctive features.这个鸟具有几种突出的特征。

27 obsessed
adj.心神不宁的,鬼迷心窍的,沉迷的
参考例句：
He's obsessed by computers. 他迷上了电脑。 The fear of death obsessed him throughout his old life. 他晚年一直受着死亡恐惧的困扰。

28 philosophical
adj.哲学家的，哲学上的，达观的
参考例句：
The teacher couldn't answer the philosophical problem.老师不能解答这个哲学问题。 She is very philosophical about her bad luck.她对自己的不幸看得很开。

29 valid
adj.有确实根据的；有效的；正当的，合法的
参考例句：
His claim to own the house is valid.他主张对此屋的所有权有效。 Do you have valid reasons for your absence?你的缺席有正当理由吗？

30 inquiry
n.打听，询问，调查，查问
参考例句：
Many parents have been pressing for an inquiry into the problem.许多家长迫切要求调查这个问题。 The field of inquiry has narrowed down to five persons.调查的范围已经缩小到只剩5个人了。

31 interpretation
n.解释，说明，描述；艺术处理
参考例句：
His statement admits of one interpretation only.他的话只有一种解释。 Analysis and interpretation is a very personal thing.分析与说明是个很主观的事情。

32 essentially
adv.本质上，实质上，基本上
参考例句：
Really great men are essentially modest.真正的伟人大都很谦虚。 She is an essentially selfish person.她本质上是个自私自利的人。

33 relentless
adj.残酷的，不留情的，无怜悯心的
参考例句：
The traffic noise is relentless.交通车辆的噪音一刻也不停止。 Their training has to be relentless.他们的训练必须是无情的。

34 inquiries
n.调查( inquiry的名词复数 )；疑问；探究；打听
参考例句：
He was released on bail pending further inquiries. 他获得保释，等候进一步调查。 I have failed to reach them by postal inquiries. 我未能通过邮政查询与他们取得联系。 来自《现代汉英综合大词典》

35 implement
n.(pl.)工具，器具；vt.实行，实施，执行
参考例句：
Don't undertake a project unless you can implement it.不要承担一项计划，除非你能完成这项计划。 The best implement for digging a garden is a spade.在花园里挖土的最好工具是铁锹。

36 logician
n.逻辑学家
参考例句：
Mister Wu Feibai is a famous Mohist and logician in Chinese modern and contemporary history. 伍非百先生是中国近、现代著名的墨学家和逻辑学家。 来自互联网

37 scarlet
n.深红色，绯红色，红衣；adj.绯红色的
参考例句：
The scarlet leaves of the maples contrast well with the dark green of the pines.深红的枫叶和暗绿的松树形成了明显的对比。 The glowing clouds are growing slowly pale,scarlet,bright red,and then light red.天空的霞光渐渐地淡下去了，深红的颜色变成了绯红，绯红又变为浅红。