Does Roger Bacon, in his best work, in which he treats of light and vision, express himself much more clearly than Aristotle when he says light is created by means of multiplying its luminous17 species, which action is called univocal and conformable to the agent? He also mentions another equivocal multiplication18, by which light engenders19 heat and heat putrefaction20.
Roger Bacon likewise tells us that life may be prolonged by means of spermaceti, aloes, and dragons’ flesh, and that the philosopher’s stone would render us immortal. It is thought that besides these fine secrets he possessed all those of judicial21 astrology, without exception, as he affirms very positively22 in his “Opus Majus,” that the head of man is subject to the influences of the ram6, his neck to those of the bull, and his arms to the power of the twins. He even demonstrates these fine things from experience, and highly praises a great astrologer at Paris who says that he hindered a surgeon from putting a plaster on the leg of an invalid23, because the sun was then in the sign of Aquarius, and Aquarius is fatal to legs to which plasters are applied24.
It is an opinion quite generally received that Roger was the inventor of gunpowder25. It is certain that it was in his time that important discovery was made, for I always remark that the spirit of invention is of all times and that the doctors, or sages26, who govern both mind and body are generally profoundly ignorant, foolishly prejudiced, or at war with common sense. It is usually among obscure men that artists are found animated27 with a superior instinct, who invent admirable things on which the learned afterwards reason.
One thing that surprises me much is that Friar Bacon knew not the direction of the magnetic needle, which, in his time, began to be understood in Italy, but in lieu thereof he was acquainted with the secret of the hazel rod and many such things of which he treats in his “Dignity of the Experimental Art.”
Yet, notwithstanding this pitiable number of absurdities28 and chimeras29, it must be confessed that Roger Bacon was an admirable man for his age. What age? you will ask — that of feudal30 government and of the schoolmen. Figure to yourself Samoyedes and Ostiacs who read Aristotle. Such were we at that time.
Roger Bacon knew a little of geometry and optics, which made him pass for a sorcerer at Rome and Paris. He was, however, really acquainted with the matter contained in the Arabian “Alhazen,” for in those days little was known except through the Arabs. They were the physicians and astrologers of all the Christian31 kings. The king’s fool was always a native; his doctor an Arab or a Jew.
Transport this Bacon to the times in which we live and he would be, no doubt, a great man. He was gold, encrusted with the rust32 of the times in which he lived, this gold would now be quickly purified. Poor creatures that we are! How many ages have passed away in acquiring a little reason!

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1
monk
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n.和尚,僧侣,修道士 | |
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2
possessed
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adj.疯狂的;拥有的,占有的 | |
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3
persecuted
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(尤指宗教或政治信仰的)迫害(~sb. for sth.)( persecute的过去式和过去分词 ); 烦扰,困扰或骚扰某人 | |
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4
condemn
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vt.谴责,指责;宣判(罪犯),判刑 | |
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5
condemned
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adj. 被责难的, 被宣告有罪的 动词condemn的过去式和过去分词 | |
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6
ram
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(random access memory)随机存取存储器 | |
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7
quacks
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abbr.quacksalvers 庸医,骗子(16世纪习惯用水银或汞治疗梅毒的人)n.江湖医生( quack的名词复数 );江湖郎中;(鸭子的)呱呱声v.(鸭子)发出嘎嘎声( quack的第三人称单数 ) | |
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8
folly
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n.愚笨,愚蠢,蠢事,蠢行,傻话 | |
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9
edifices
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n.大建筑物( edifice的名词复数 ) | |
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10
commendable
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adj.值得称赞的 | |
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11
imprisonment
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n.关押,监禁,坐牢 | |
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12
rhetoric
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n.修辞学,浮夸之言语 | |
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13
logic
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n.逻辑(学);逻辑性 | |
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14
immortal
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adj.不朽的;永生的,不死的;神的 | |
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15
penetrating
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adj.(声音)响亮的,尖锐的adj.(气味)刺激的adj.(思想)敏锐的,有洞察力的 | |
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16
penetrate
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v.透(渗)入;刺入,刺穿;洞察,了解 | |
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17
luminous
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adj.发光的,发亮的;光明的;明白易懂的;有启发的 | |
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18
multiplication
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n.增加,增多,倍增;增殖,繁殖;乘法 | |
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19
engenders
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v.产生(某形势或状况),造成,引起( engender的第三人称单数 ) | |
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20
putrefaction
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n.腐坏,腐败 | |
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judicial
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adj.司法的,法庭的,审判的,明断的,公正的 | |
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22
positively
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adv.明确地,断然,坚决地;实在,确实 | |
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23
invalid
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n.病人,伤残人;adj.有病的,伤残的;无效的 | |
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24
applied
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adj.应用的;v.应用,适用 | |
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25
gunpowder
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n.火药 | |
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26
sages
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n.圣人( sage的名词复数 );智者;哲人;鼠尾草(可用作调料) | |
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animated
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adj.生气勃勃的,活跃的,愉快的 | |
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28
absurdities
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n.极端无理性( absurdity的名词复数 );荒谬;谬论;荒谬的行为 | |
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29
chimeras
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n.(由几种动物的各部分构成的)假想的怪兽( chimera的名词复数 );不可能实现的想法;幻想;妄想 | |
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30
feudal
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adj.封建的,封地的,领地的 | |
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31
Christian
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adj.基督教徒的;n.基督教徒 | |
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32
rust
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n.锈;v.生锈;(脑子)衰退 | |
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