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宋 Song · 诗 Poem

观书有感

Thoughts on Reading

朱熹

Zhu Xi

哲理Philosophical 读书Reading 理趣Theme

半亩方塘一鉴开，天光云影共徘徊。
问渠那得清如许？
为有源头活水来。

Half a mu of square pond opens like a mirror,
Sky light and cloud shadows wander together.
Ask the pond how it can be so clear?
Because there is living water from the source.

Listen

Meaning

The poem describes a half-mu square pond opening like a mirror, with sky and clouds reflected and wandering in the water. It asks why the pond is so clear and answers: because fresh water flows continuously from the source. The poet uses this scene as a metaphor for the pursuit of knowledge: only by constantly acquiring new insights can one maintain a clear and open mind.

半亩大的方形池塘像一面打开的镜子般澄澈，天光与云影在水中来回摇漾。要问它为何能这样清澈？只因有那源源不断的活水从源头流来。诗人借池塘清澄之景比喻读书明理：唯有不断汲取新知，心地才能常保清明通达。

Appreciation

The first two lines depict the pond as a mirror, clear and serene, reflecting the sky and clouds. The third line poses a question, and the fourth provides the answer, revealing the source of clarity: the continuous inflow of living water. Through this vivid imagery, the poet conveys the philosophical idea that continuous learning keeps the mind clear and active. The metaphor of 'living water' for new knowledge is both apt and inspiring.

【白话串讲】 “问渠那得清如许？为有源头活水来”——朱熹看着半亩方塘，悟出了读书的道理：水为什么这么清？因为有活水不断流进来。读书，就是那源头活水。【意象与手法】诗以比兴见长。前两句写景，描绘方塘如镜、天光云影徘徊的清美画面；后两句陡作问答，由景及理。比喻贯穿全篇，「方塘」喻心，「活水」喻新知，化玄奥的理学为直观意象，避免了说理诗的枯燥，饶有诗趣。【情感与主旨】朱熹为南宋理学家、教育家。此诗题「观书有感」，约作于其讲学著书期间，借眼前池塘之景阐发读书穷理的体会，是宋代理学诗「以理入诗」的典型，寓抽象义理于活泼意象。【名句点睛】常考「问渠那得清如许？为有源头活水来」中「源头活水」的比喻义——喻不断学习、不断汲取新知；「鉴」喻水的澄澈；以及理趣诗即景明理、理在象中的艺术特点。

Background

Zhu Xi was a Neo-Confucian philosopher and educator of the Southern Song dynasty. This poem, titled 'Thoughts on Reading,' was likely written during his teaching and writing career. He uses the scene of the pond to express his insights on learning. It is a typical example of Song dynasty philosophical poetry that embeds abstract reasoning in vivid imagery.

朱熹（1130—1200），字元晦，号晦庵，南宋理学家、思想家、教育家，理学集大成者，世称「朱子」。此诗题「观书有感」，约作于其讲学著书期间。朱熹一生致力于「格物穷理」的理学实践，主张读书须「熟读精思」「切己体察」，其读书方法在《朱子语类》中有大量阐述。此诗即其读书心得的诗意结晶：某日观书有得，偶见半亩方塘清澄如镜、天光云影徘徊其间，忽然悟到「问渠那得清如许？为有源头活水来」之理——水之清在于源头活水不断注入，心之明在于学问新知不断滋养，于是借眼前之景写成此诗。全诗虽写景物，实则议论为学，是宋代理学诗「以理入诗」的典型，把抽象的格物穷理之学化为活泼的池塘意象，深入浅出，遂成千古传诵的劝学名篇。朱熹一生讲学不辍，其论读书有『循序渐进、熟读精思』诸说，此诗以方塘活水写读书之效，正是其教学理念的诗化表达；此诗与《观书有感》其二『昨夜江边春水生』并为组诗，一写心之明，一写理之通，合观可见朱子为学之全貌。

Art

The poem excels in using metaphor and contrast. The first two lines paint a beautiful picture, while the last two suddenly shift to a question-and-answer format, moving from scene to reason. The metaphor of the pond for the mind and living water for new knowledge turns abstract philosophy into concrete imagery, avoiding dryness and adding poetic charm.

诗以比兴见长，通篇用喻而理在象中。前两句写景：「半亩方塘一鉴开」以「鉴」（镜子）喻塘水之清——半亩方塘像一面打开的镜子，澄澈明净；「天光云影共徘徊」写天光云影在镜面般的水中来回摇漾，是动态的倒影，写出塘水之活、之清、之明。后两句陡作问答：「问渠那得清如许？为有源头活水来」——以问作答，点明塘水之清的根本原因：不是塘水自清，而是源头活水不断注入，故能常保清澈。全诗的妙处在于双层比喻：「方塘」喻心（心灵），「天光云影」喻心之所映（理趣），「源头活水」喻新知（学问），把「心要常养、学须日新」的理学主张化为可感可触的画面。由景及理、因物见道，化玄奥为直观，避免了说理诗的枯燥，饶有诗趣，正是朱熹「寓物说理而不腐」的高明处。尤妙者在『问』字之设——不直接说理而以问答出之，如良师授课、循循善诱，理趣之中兼有教益，正是理学诗『即物穷理』而能深入浅出的典范，也是此诗千年传诵不衰的艺术根基。

Allusions

The word 'mirror' (鉴) originally refers to a bronze mirror, here used to describe the water's clarity. 'Living water from the source' alludes to Mencius' saying 'a spring that flows day and night' (源泉混混，不舍昼夜), symbolizing endless learning. By incorporating Confucian classical references, the poem enriches its philosophical depth.

诗中化用多处经典意象而浑然无痕。「一鉴」之「鉴」本指铜镜，暗用「以铜为镜，可以正衣冠」的古训（《新唐书·魏征传》载唐太宗语），此处以镜喻水，写出塘水之澄澈可鉴；「天光云影共徘徊」暗含《大学》「明德」之说——心体本明，如镜映物，天光云影即心中之理与万物的照映。「源头活水」化用《孟子·离娄下》「原泉混混，不舍昼夜，盈科而后进」之意——孟子以泉水不舍昼夜、盈科而进喻君子之学须循序渐进、不舍不休，朱熹以「源头活水」喻学问之源源源不绝，正承孟子血脉。又「渠」为古汉语第三人称代词，指方塘，非用典。全诗以儒家经典意象入诗，熔铸经史而不见痕迹，使理趣诗兼具深厚学养，正是理学家诗「以学问为诗」的特色。又『徘徊』二字暗用《庄子》『彷徨乎无为其侧』之意，写光影之流转从容；以儒道经典意象入诗而浑然无痕，正是朱熹『理一分殊』之思想在诗艺上的体现，理趣诗之深厚学养于此可见。

Commentary

This poem has long been a model for enlightening students. Qing dynasty critics praised Zhu Xi for 'embedding reasoning in objects without being pedantic' (寓物说理而不腐). Wang Xiang selected it in his 'Thousand Poets' (千家诗), making it widely known. Today, people often cite 'living water from the source' to emphasize continuous learning and innovation.

此诗向为蒙学劝学之范，流传极广。宋末元初方回《瀛奎律髓》评朱熹诗「格高意远」；清人评朱诗「寓物说理而不腐」，此诗正是注脚——以池塘喻心、以活水喻学，理之深而词之浅，童子可诵而学者味之无穷。王相《千家诗》选此诗并加注释，使之家喻户晓，与《春日》「等闲识得东风面，万紫千红总是春」并为朱熹理趣诗双璧：一以方塘喻为学，一以春风喻求道，皆即景明理、深入浅出。今人多引「源头活水」喻不断学习、不断创新之本，足见其理之常新。就诗论诗，此作以比兴之巧、理趣之深、语言之清，为宋代理学诗赢得了最高的艺术评价，也是理解宋诗「以议论为诗」「以理趣见长」特质的最佳入门之作。就文学史而言，此诗是宋代理趣诗从『以议论为诗』走向『以意象明理』的标志性作品——以池塘活水写心学新知，理不碍景、景不碍理，遂开后世哲理诗之新境，其影响远及明清性理诗与近世白话哲理诗。

Prosody

Form Seven-character quatrain七言绝句

Rhyme kai, huai, lai; rhyme in level tone of the 'hui' rhyme (Shi Hui)韵脚为开、徊、来，押平水韵上平十灰韵，首句「开」字入韵，平起平收，一韵到底，音节舒展明快。

Tone pattern Starts with level tone, first line rhymes; scene first, reasoning later; well-structured.平起首句入韵式；前两句写景平缓，后两句问答起伏，末句「来」字收以平声，声情与理趣相谐。

Reading note Zhu Xi uses the square pond as a metaphor for the mind, and the clarity of water as a metaphor for the brightness of learning; it is a representative work of Song philosophical poetry.此诗为七言绝句，四句二十八字，章法上「前写景、后说理」，即景明理，井然有序。首句「半亩方塘一鉴开」以比喻起笔，写塘水之清；次句「天光云影共徘徊」以动态倒影承写水之活、之明，两句一幅清美画面；三句「问渠那得清如许」陡作设问，由景转理，是全诗「转」的枢纽——以问句扬起波澜，打破前两句的平缓；末句「为有源头活水来」以自答收束，点破题旨，是「合」。平仄为平起平收式，音节舒缓明净，正合池塘清景；「开」「徊」「来」同押十灰韵，均为平声敞亮之音，读来如清泉流响。作为宋代理趣诗的代表，此诗以比兴为体、以问答为用，理在象中而不落言筌，是七绝中「以景明理」的典范，足为揣摩绝句起承转合与理趣表达之范本。

Line by line

半亩方塘一鉴开，天光云影共徘徊。

The first line compares the pond to a mirror, emphasizing its clarity; the second line describes the play of light and shadows, creating a lively scene that sets the stage for the philosophical insight.

半亩大的方形池塘像一面镜子般澄澈展开，天光与云影在水中来回摇漾。

A half-mu square pond opens like a mirror; the light of heaven and the shadows of clouds wander together on it.

首联写景如画，为下文的哲理设喻作铺垫。「半亩方塘」点出池塘之小，「一鉴开」以「鉴」（古镜）喻塘水之清澈明净——一面打开的铜镜，光可鉴人，写出水面之平、之明、之净；「天光云影共徘徊」写天空的光影倒映水中、随波摇漾，「共徘徊」三字赋予静态的画面以流动的生命，天光云影与塘水交融，浑然一体，境界空明。两句一写水之明，一写影之活，明净中见生机。此景既是眼前实景，又是心体的象征——心如止水而能映照万物，正是理学家「心体澄明、万物皆备于我」的诗意呈现，为下句「问渠那得清如许」的哲理发问蓄足了势。

The opening couplet paints the scene like a picture, setting the metaphor for the philosophy below. A half-mu square pond opens like a mirror: the half-mu names the pond's smallness; like a mirror compares the water to an ancient bronze mirror, opened and bright, writing the surface's level, brightness, and purity; the light of heaven and the shadows of clouds wander together on it writes the sky's light reflected in the water, drifting with the ripples — the wander-together endows the still picture with moving life, the sky's light and the cloud's shadow fused in the pond, the realm empty and clear. Two lines, one the water's brightness, one the shadows' life, vitality within the purity. The scene is at once the real sight before the eyes, and the symbol of the mind: the mind like still water able to mirror all things, the poetic presentment of the Neo-Confucian teaching of the clear mind holding all things, storing force for the question below.

问渠那得清如许？为有源头活水来。

The third line asks a rhetorical question, and the fourth answers it, revealing that the pond's clarity comes from a continuous supply of fresh water, metaphorically representing the necessity of constant learning.

要问它为何能这样清澈？只因有那源源不断的活水从源头流来。

Ask it, how is it so clear? Because living water flows to it from its source.

末联陡作问答，由景及理，点破全诗主旨。「问渠那得清如许」以设问提起——塘水为何如此清澈？「为有源头活水来」以自答揭出——只因源头活水不断注入。问答之间，两层深意自然流出：一层是就景而言，水之清在于活水不断更新，死水必腐，活水长清，是自然之理；一层是就学而言，「方塘」喻心，「活水」喻新知，心灵之明在于不断读书穷理、汲取新知，学问不进则退，正如死水必腐，是为学之理。把「学须日新」的理学主张化为如此清新自然的问答，理在象中、情在理中，深入浅出，遂成千古名句。此诗之妙，正在这「以活水问清塘」的一问一答之间。

The closing couplet suddenly opens in question and answer, moving from scene to principle, naming the poem's theme. Ask it, how is it so clear? raises the question: why is the pond water so pure? Because living water flows to it from its source answers: only because living water pours in from the source unceasingly. Between the question and the answer, two layers of meaning flow: one on the scene — the water's clearness lies in the living water's ceaseless renewal, dead water must rot, living water stays clear, the law of nature; one on learning — the square pond figures the mind, the living water figures new knowledge, the mind's brightness lies in the ceaseless study of the principles of things, learning not advancing retreats, like dead water rotting. Turning the Neo-Confucian doctrine of learning's daily renewal into such a fresh, natural question and answer, the principle within the image, the feeling within the principle, profound and yet plain, it has become a line known through the ages.

Study

Word focus

鉴 mirror; here metaphor for a clear surface 「半亩方塘一鉴开」之「鉴」字，是首句的诗眼，兼写水清与心明。「鉴」本指铜镜，古人以镜照物、以镜正容，「一鉴开」写半亩方塘如一面打开的铜镜——「开」字尤妙，镜本有盖有匣，打开方见其明，喻塘水澄澈可鉴、一目见底。此字有三层妙处：一是以镜喻水，写出水面之平、之明、之净，视觉形象鲜明；二是暗用「以铜为镜，可以正衣冠」的古训，赋予方塘以「鉴照万物」的品格，为下文「天光云影」的倒影作铺垫；三是象征心体——理学家以心为「明镜」，心如止水方能鉴照万物，「鉴」字暗启「心体澄明」之理趣。一字而兼状物、用典、喻理，正是朱熹炼字「一字千钧」的功力。

活 living; flowing; here indicating freshness and continuity 「为有源头活水来」之「活」字，是全诗的诗眼，也是理趣的枢纽。字面上「活水」指流动不息的流水——与死水相对，活水不断更新，故能常保清澈；骨子里「活水」喻不断汲取的新知——学问如源头活水，日日注入，心灵方能澄明不腐。此字之妙有三：一是以「活」破「清」，清非静止之清，而是流动之清，水因活而清，学因进而明，点出「清」的根源在「活」，立意高远；二是以「活」启新，「活」字暗含生生不息之意，正是宋儒「天行健，君子以自强不息」的精神写照；三是语言极平易而意蕴极深远，一个口语化的「活」字，把深刻的为学之道说得亲切可感，是朱熹「以常语说至理」的本色，千载之下犹觉其理鲜活。

清如许 so clear; '如许' means 'like this' 「问渠那得清如许」之「清如许」三字，是设问的关键，以虚写实、以问引答。「许」为古汉语表程度的虚词，犹「如此、这般」，「清如许」即「清澈到这般地步」，以惊叹的口吻写出塘水之清超出常情，引人追问。此三字之妙在于：一是以「清」点题，塘水之清是此诗立象的根本，先写其清之非常，才引出「那得」的追问；二是以问作势，不问则理不出，一问则「活水」之答水到渠成，问答之间理趣自生；三是虚词生韵，「如许」二字摇曳生姿，使设问句读来有惊叹、有诘问、有寻思，声情并茂。与下句「源头活水来」的实答相对，一虚一实，一问一答，正是全诗由景入理、即物明道的枢纽所在。