何柏斋曰,足相火属胆配肝,主血者也;手相火属三焦配肾之命门,主精者也。肝与命门皆属风木
,木中有火,则精血之中有热气也。然精血体润,水也。火与水相守,故不
发。至发而为热,则皆精血将枯之所致也,譬木枯则火易焚耳,故相火发者难治。今虚劳骨蒸之病,皆相火
发热之证也。小水不能灭大火,法当补阴,则热自退,此论丹溪主寒凉之误。人之脏腑以脾胃为本,盖
人之饮食,皆入于胃而运于脾,为地之土也。然脾胃之能化与否,实由于水火二气,非脾胃之所能也。火盛
则脾胃燥,水盛则脾胃湿,皆不能化物,乃生诸病。水肿之症,盖水盛而火不能化也,火衰而不能化水,
故水之入于脾胃,皆渗入血脉骨肉,血亦化水而发肿胀,皆
自然之理也。导其水,复补其火,使二气平和,病斯去矣。丹溪谓脾失运化由肝木侮脾,乃欲清心
经之火,使肺金得令以制肝本,迂而不切。
刘河间谓补泻脾胃之本者,盖以脾胃中和之气也,燥其湿则为泻,润其燥则为补。
丹溪曰气无补法者,庸俗之论也。以其痞满壅塞,似难于补。不知正气虚则浊气滞,正气得补,而行
健运之职,则浊气自下而痞满除,气虚不补,邪何由退?《内经》曰∶壮者气行则愈,怯者着而成病。欲
破滞气,消胀满,必补脾气,至的至当,非浅见所知者。
大凡失血,脉皆洪大无力,即芤脉也。阴血既亏,阳无所根据,浮散于外,故见此象。误认为实火,大
谬。
张三锡曰∶大抵虚损宜分两途∶一则中气虚,属内伤,脉缓或虚大无力,可治;一则真阴亏损,阴虚
火旺,脉弦数无力,难治。
又曰∶心肺损而色败,肾肝损而形痿。
发黄有阴阳∶天五之土,为火所焚,阳黄也;地二之火,为水所溺,阴黄也。
虚损之微者,真火尚存,服寒凉犹可;虚损之甚者,真火已亏,药用寒凉,岂能使之化为精血,
以补其虚乎?人身之中,藏真有三∶曰元精,曰元气,曰元神。精乃脏腑之真,非荣血之比,故曰天癸。
气为脏腑之大经,为动静之主,故曰神机。脉为天真委和之大气,其机运升降,皆随气而动,因血而荣。
精气资始,相生不失,以养一身,为人之司命。若精不足则气失资化,气不足则血失所荣,血不足则气无所
附,天真散乱,而病生焉。
张三锡曰∶劳伤五脏皆成瘵,独肺劳莫治。以咳嗽、咳
血,阴火上炎,日晡甚,久之咽喉生疮,一边睡,或左或右,寒凉滋阴则伤脾而增泻,参术益气而助火
则增嗽,添泻添喘,死期迫矣。大抵脉细数,骨蒸,干嗽声哑者,必不可救。乃真阴亏损,病在膏盲,药
莫能及也。其发潮热者,俗以凉药济之,不知阴虚生内热,非芩、连、知、柏所可治者。如外感热邪,邪净
则止;伤食发热,宿滞化则止。此阴虚非一朝一夕,心静可以养阴,而又全赖饮食从胃中生出阴血。若不
顾脾胃,徒事坎离,则阴未必滋,热未必除,脾胃转伤,热嗽愈甚矣。
东垣曰∶百病昼则增剧,夜则安静,是阳病有余,乃气病而血不病也。夜则增剧,昼则安静,是阴病
有余,乃血病而气不病也。昼则发热,夜则安静,是阳自旺于阳分也。昼则安静,夜则发热,是阳气下陷入
阴中也,名曰热入血室。昼则发热烦躁,夜亦发热烦躁,是重阳无阴,当亟泻其阳,峻补其阴。夜则恶寒,
昼则安静,是阴血自旺于阴分也。夜则安静,昼则恶寒,是阴气上溢于阳中也。夜则恶寒,昼亦恶
寒,是重阴无阳,当亟泻其阴,峻补其阳。昼则恶寒,夜则烦躁,饮食不入,名曰阴阳交错者,死。
东垣曰∶两寸脉实,谓之阳盛阴虚,下之则愈。两寸脉俱虚,谓之阴阳俱虚,补阳则阴竭,补阴则阳竭
,宜调之以甘药。两寸脉不足,求之于地,地者脾胃也,当从阴引阳。两寸脉短小,乃阳气不足,病在下也,
谓之阴盛阳虚,取之下陵、三里。补泻无形,是谓导气固精,治在五乱中取法,乃不足病也,当取穴于腹募
气海,甚者取三里、气冲,以毫针引之。两关脉俱实,上不至发汗,下不至利大便,宜芍药汤泻其土实。
两关脉俱虚,脉沉细,宜服理中汤。脉弦迟,宜服建中汤,或加黄 ,附子之类。两尺俱实,是阴盛阳虚,下
之则愈。两尺俱虚,宜服姜附汤补阳。问∶何阴虚而补阳?曰∶阴本根于阳。仲景云∶两尺脉俱虚者,
不宜下,下之为逆,逆者死。两尺或不见,或短小,病在天上,求之于五脏背俞。或血络经隧伏火,是天
上有阴火,故阳不收藏也。又《难经》云∶下部无脉,或两尺竭绝,乃为食塞,当吐。
先哲曰∶浮、沉、迟、数,滑、涩六者之中,复有大相悬绝之要,人多不识。夫浮为表矣,而凡阴虚者
,脉必浮而无力,是浮不可概言表,可升散乎?沉为里矣,而凡表邪初
感之甚者,阴寒束于皮毛,阳气不能外达,则脉必先见沉紧,是沉不可概言里,可功内乎?迟为寒矣,
而伤寒初退,余热未消,脉多迟滑,是迟不可概言寒,可温中乎?数为热矣。而凡虚损之候,阴阳俱亏,
气血散乱者,脉必急数,愈数者愈虚,愈虚者愈数,是数不可概言热,可寒凉乎?微细类虚矣,而痛极壅蔽
者脉多伏匿,是伏不可概言虚,可骤补乎?洪弦类实矣,而真阴大亏者必关格倍常,是弦不可概言实,可消
伐乎?如是则纲领之中,复有大纲领存焉,医不能以四诊相参,而欲孟浪,此脉之所以难言也。
王好古曰∶脉之不病,其神不言当自有也。脉之既病,当求其中神之有与无焉。如六数七极,热也,
脉中有力即有神也;三迟二败,寒也,脉中有力即有神也。热有神也,泻其热而神在焉;寒而有神,去其寒
而神在焉。寒厥之脉,苟无力无神,将何药以泄热去寒乎?使不知此,将何根据以生。
崆峒子云∶人之病痰火,十之八九。老人不宜速降其火,虚人不宜尽去其痰。攻之太甚,则病转剧而致
危,殆以固元气为本。凡病类推而行之。
《国小》有虚实分治之法,谓疾病之生也,皆因外感、内伤生火、生湿、生热、生痰四者而已。审其
少壮新病,是湿
则燥之;是火则泻之;湿而生热,则燥湿而兼清热;火而生痰,则泻火而兼豁痰,无余蕴矣。当其
衰老久病,又当攻补兼施∶如气虚而有湿热痰火,则以四君补气,而兼燥湿清热,泻火豁痰;血虚而有
痰火湿热,则以四物补血,而兼泄火豁痰,清热燥湿,如此则攻补合宜。故曰∶少壮新病,攻邪可
审;老衰久病,补益为先。若夫阴虚火动,脾胃虚衰,真阴者,水也,脾胃者,土也,土虽喜燥,然太燥则
草木枯槁,水虽喜润,然太润则草木湿烂,是以补脾滋肾之剂,在燥湿得宜耳。
治其旺气,谓病有阴阳,气有衰旺,不明衰旺,则治之反甚。如阳盛阴衰者,阴虚火旺也,治之者不知
补阴,而专用苦寒治其旺,岂知苦寒皆沉降,沉降则亡阴,阴愈亡则火愈甚,故服寒反热者,阴虚不宜降
也。又如阳衰阴盛者,气弱生寒也,治之者不知补阳以消阴,而专用辛温治阴之旺,岂知辛热能耗散,耗散则
亡阳,阳愈亡则寒愈甚,故服热药反寒者,阳虚不宜耗也。此无他,皆以专治旺气,故其相反如此。
喻嘉言曰∶逆秋气则伤肺,冬为飧泄,与春伤于风,夏生飧泄不同。然伤风而飧泄,以风为主,风者木
也;伤肺而飧泄,以肺为主,肺者金也,其候各异。风邪伤人,必入空窍,而空窍惟脾胃为最,风既居之
,其导引如顺风扬帆,不
俟脾之运化,食入即出,以致飧已即泄也。不知者以为脾虚完谷不化,如长夏洞泄寒中,及冬月飧泄之泄,
反以补脾刚燥之药,助风性之劲,有泄无已,每至于束手无策。倘知从春令治之,用桂杖领风从肌表而出,
一二剂可愈也。秋月之伤肺,伤于肺之燥也,与秋伤于燥,冬生咳嗽同是一病。但在肺则为咳嗽,在大肠则
为飧泄,世所谓肺移热于大肠,久
为肠 者,即此病也。但使肺热不传于大肠,则飧泄自止。不知者惟务止涩,以燥益燥,不亦冤哉。
逆冬气则伤肾,春为痿厥,同一病乎?曰∶痿自痿,厥自厥,本是二病。然痿者必至于厥,厥者必至于
痿,究竟同一病也。但肝气失恃,则痿病先见;筋脉未倾,则厥病先见耳。肝病则筋失所养,如其夙有筋
患,不觉忽然而痿矣。肝气以条达为顺,素多郁怒,其气不条达而横格,渐至于下虚上盛,气高不返,眩运
不知人而厥矣,厥必气通始苏也。此皆冬时失养脏之道,正气不足之病,与治痰治风绝不相干。一味培补
肾水,生津养血,听其筋自柔和,肝自条达可也。若精枯气削,亦难为矣。
药以胜病,乃致脾胃不胜药,犹不加察,元气亦坏,变症多端。如脾虚而气短,不能以续,变而似喘促
,尚用降气定喘之药;如脾虚卫气不行,变而为浮肿,尚用耗气利水之药;如脾虚郁滞,变而作寒热,尚
谓外感,用外散之药。虚而愈虚,直令气尽身亡,全不悔悟,复以此法施之他人,展转戕生,可胜诛哉。
人之真气所在,其义有三,曰上、中、下也。上者所以受于天,以通呼吸者也;中者生于水谷,以养
荣卫者也;下者气化于精,藏于命门,以为三焦之根本者也。故上有气海,曰膻中也,其治在肺;中有水谷气
血之海,曰中气也,其治在脾胃;下有气海,曰丹田也,其治在肾。人之所赖,惟此气耳。气聚则生,
气散则死。故帝曰气为内宝,此诚最重之词,医家最切之旨也。今之医家,但知见病治病,初不识人根本。
天下之理,亦乌有根本受伤,而能无败者耶。
天下假虚之证不多见,而假实之症最多;假寒之症不难治,而假热之治多误。然实者多热,虚者多寒
。如丹溪曰∶气有余便是火,故实能受寒。而余续之曰∶气不足便是寒,故虚能受热。世有不明真假本末而知医者,则未敢许也。
喻嘉言曰∶肾中真阳得水以济之,留恋不脱;得土以堤之,蛰藏不露。而手足之阳为之役使,流走周身,固护
腠理,而捍卫于外。脾中之阳,法天之健,消化饮食,传布津液,而营运于内。胸中之阳,若日之驭,离照当空,消阴除翳,而宣布于上。此三者,丰亨有象,肾中真阳安享太平。惟在位、在上、在中之阳,衰微不振,阴气乃始有权。或肤冷不温,渐至肌硬不柔,卫外之阳不用矣;或饮食不化,渐至呕泄痞胀,脾中之阳不用矣;或当膺阻碍,渐至窒塞不开,胸中之阳不用矣。乃取水土所封之阳,出而在事,头面得阳而戴赤,肌肤得阳而 燥,脾胃得阳而除中,其能久乎?
庞安常曰∶有阴水不足,阴火上升,肺受火侮,不得清肃下行,由是津液凝浊生痰不生血者,此当以润剂加门冬、地黄、枸杞之类滋其阴,使上逆之火得返其宅而息焉,则痰自清矣。投以二陈,立见危殆。有肾虚不能纳气归原,出而不纳,积而不散,则痰生焉,八味丸主之。此证甚难。
心为血之主,肝为血之脏;肺为气之主,肾为气之脏,诚哉是言也。学人惟知血之出于心,而不知血之纳于肝,惟知气之出于肺,而不知气之纳于肾。假如血痢作恙,治以行血逐积等剂,而其痛独存者,血之所藏无以养也,必佐以养肝,则其痛止。如喘嗽气鸣,治以调气豁痰,而终不下降者,以气之所藏无以归也,必佐以安肾,则其气归原。此传心吃紧之法也。
何柏斋说:足部的相火归属于胆,与肝相配,主管血液;手部的相火归属于三焦,与肾的命门相配,主管精气。肝和命门都归属于风木,木中蕴含火,因此精血之中有热气存在。然而精血性质滋润,属于水。火与水相互依存,所以不会发作。一旦发作成为热证,都是因为精血即将枯竭所致,就像树木干枯后火容易燃烧一样,所以相火发动的病难治。如今虚劳骨蒸的病,都是相火发热的证候。小便不能扑灭大火,治疗应当补阴,那么热自然消退,这是批评丹溪主张使用寒凉药物的错误观点。人的脏腑以脾胃为本源,大概因为人的饮食,都进入胃而由脾运化,这相当于地上的土。然而脾胃能否消化食物,实际上取决于水火二气,并非脾胃自身的能力。火盛则脾胃干燥,水盛则脾胃湿滞,都不能消化食物,从而产生各种疾病。水肿的症状,大概是水盛而火不能化水,火衰而不能气化水液,所以水进入脾胃后,都渗入血脉骨肉,血也化为水而发生肿胀,这都是自然的道理。疏导水液,再补益其火,使水火二气平和,病就能去除。丹溪认为脾失运化是由于肝木克制脾土,于是想要清心经之火,使肺金得令以制约肝木本源,迂腐而不切实际。
刘河间说补泻脾胃的根本,在于脾胃中和之气,燥其湿就是泻,润其燥就是补。
丹溪说“气没有补法”,这是庸俗之人的论调。因为痞满壅塞,似乎难以进补。不知道正气虚则浊气停滞,正气得到补益,就能行使健运的职责,那么浊气自然下行,痞满消除,气虚如果不补,邪气如何退去?《内经》说:身体强壮的人,气行则病愈;体弱的人,气滞着而成病。想要破除滞气,消除胀满,必须补脾气,这才是确切恰当的方法,不是浅薄见识所能知道的。
大凡失血的患者,脉象都是洪大无力,这就是芤脉。阴血既然亏损,阳气无所依附,浮散于外,所以出现这种脉象。误认为是实火,是大错特错。
张三锡说:大致虚损应当分为两类:一类是中气虚,属于内伤,脉缓或虚大无力,可以治疗;一类是真阴亏损,阴虚火旺,脉弦数无力,难治。
又说:心肺受损则面色败坏,肾肝受损则形体痿废。
发黄有阴阳之分:天五之土,被火焚烧,是阳黄;地二之火,被水淹没,是阴黄。
虚损轻微的,真火尚存,服用寒凉药物还可以;虚损严重的,真火已亏,药用寒凉,怎么能使之化为精血来补益其虚呢?人身之中,藏真有三:叫元精、元气、元神。精是脏腑的真气,不是营血可比拟的,所以叫天癸。气是脏腑的大经,是动静的主宰,所以叫神机。脉是天真的委和大气,其机运升降,都随气而动,因血而荣养。精气资始,相生不失,以滋养一身,是人的司命。如果精不足则气失去资化,气不足则血失去荣养,血不足则气无所依附,天真散乱,病就产生了。
张三锡说:劳伤五脏都成痨瘵,唯独肺劳不可治。因为咳嗽、咳血,阴火上炎,日晡时加重,时间久了咽喉生疮,侧卧时一边睡,或左或右,用寒凉滋阴药则伤脾而增加腹泻,用人参白术益气则助火而增加咳嗽,添腹泻添气喘,死期迫近了。大致脉细数,骨蒸,干咳声哑的,必不可救。这是真阴亏损,病在膏肓,药物不能到达的地方。那些发潮热的,世俗用凉药救治,不知道阴虚生内热,不是黄芩、黄连、知母、黄柏所能治疗的。如果是外感热邪,邪气净了热就止;伤食发热,宿食积滞化解了就止。这个阴虚不是一朝一夕形成的,心静可以养阴,而又完全依赖饮食从胃中生出阴血。如果不顾惜脾胃,只从事坎离(心肾)的治疗,那么阴未必能滋,热未必能除,脾胃反而受伤,热嗽更加严重了。
东垣说:百病白天加重,夜晚安静,这是阳病有余,是气病而血不病。夜晚加重,白天安静,这是阴病有余,是血病而气不病。白天发热,夜晚安静,这是阳自旺于阳分。白天安静,夜晚发热,这是阳气下陷入阴中,名叫热入血室。白天发热烦躁,夜晚也发热烦躁,这是重阳无阴,应当急泻其阳,峻补其阴。夜晚恶寒,白天安静,这是阴血自旺于阴分。夜晚安静,白天恶寒,这是阴气上溢于阳中。夜晚恶寒,白天也恶寒,这是重阴无阳,应当急泻其阴,峻补其阳。白天恶寒,夜晚烦躁,饮食不入,名叫阴阳交错,主死。
东垣说:两寸脉实,叫做阳盛阴虚,用下法就可以痊愈。两寸脉都虚,叫做阴阳俱虚,补阳则阴竭,补阴则阳竭,适宜用甘药调和。两寸脉不足,要从地寻找,地就是脾胃,应当从阴引阳。两寸脉短小,是阳气不足,病在下部,叫做阴盛阳虚,取穴下陵、三里。补泻无形,这叫导气固精,治疗方法在五乱中取法,这是不足的病,应当取腹募气海穴,严重的取三里、气冲,用毫针引导。两关脉都实,上不致发汗,下不致利大便,适宜服芍药汤泻其土实。两关脉都虚,脉沉细,适宜服理中汤。脉弦迟,适宜服建中汤,或者加黄芪、附子之类。两尺脉都实,是阴盛阳虚,用下法就可以痊愈。两尺脉都虚,适宜服姜附汤补阳。问:为什么阴虚而补阳?答:阴本根于阳。仲景说:两尺脉都虚的,不宜下,下法是逆治,逆治者死。两尺脉或不见,或短小,病在上部(天上),求之于五脏背俞。或者是血络经隧伏火,是天上有阴火,所以阳不收藏。又《难经》说:下部无脉,或两尺竭绝,乃是食塞,应当吐法。
先哲说:浮、沉、迟、数、滑、涩六者之中,还有大相悬绝的要诀,人们大多不认识。浮为表证,但凡是阴虚的人,脉必浮而无力,所以浮不可一概说是表证,可以用升散法吗?沉为里证,但凡是表邪初感严重的,阴寒束缚皮毛,阳气不能外达,则脉必先见沉紧,所以沉不可一概说是里证,可以攻里吗?迟为寒证,但伤寒初退,余热未消,脉多迟滑,所以迟不可一概说是寒证,可以用温中药吗?数为热证。但凡是虚损的征候,阴阳俱亏,气血散乱的,脉必急数,越数越虚,越虚越数,所以数不可一概说是热证,可以用寒凉药吗?微细类似虚证,但痛极壅蔽的人脉多伏匿,所以伏不可一概说是虚证,可以骤补吗?洪弦类似实证,但真阴大亏的人必关格倍常,所以弦不可一概说是实证,可以用消伐药吗?像这样,纲领之中,又有大纲领存在,医生不能以四诊相参,却想鲁莽行事,这就是脉之所以难言的原因。
王好古说:脉不生病,其神不言自明自有。脉既生病,应当探求其中神气的有无。如六数七极,是热,脉中有力就是有神;三迟二败,是寒,脉中有力就是有神。热而有神,泻其热而神还在;寒而有神,去其寒而神还在。寒厥的脉,如果无力无神,用什么药来泄热去寒呢?如果不了解这个,凭借什么生存。
崆峒子说:人的病痰火的,十之八九。老人不宜速降其火,虚人不宜尽去其痰。攻伐太甚,则病转剧而导致危险,大概应以固护元气为本。凡是病症类推而行。
《国小》有虚实分治的方法,说疾病的产生,都是因为外感、内伤生火、生湿、生热、生痰这四者而已。审视其少壮新病,是湿则燥之;是火则泻之;湿而生热,则燥湿兼清热;火而生痰,则泻火兼豁痰,就没有剩余的了。当其衰老久病,又当攻补兼施:如气虚而有湿热痰火,则以四君子汤补气,而兼燥湿清热,泻火豁痰;血虚而有痰火湿热,则以四物汤补血,而兼泄火豁痰,清热燥湿,像这样攻补合宜。所以说:少壮新病,攻邪可审慎;老衰久病,补益为先。至于阴虚火动,脾胃虚衰,真阴是水,脾胃是土,土虽然喜燥,但太燥则草木枯槁,水虽然喜润,但太润则草木湿烂,所以补脾滋肾的药剂,在于燥湿得宜罢了。
治其旺气,说病有阴阳,气有衰旺,不明衰旺,则治疗反而更重。如阳盛阴衰者,是阴虚火旺,治疗的人不知道补阴,而专用苦寒治其旺,哪里知道苦寒皆沉降,沉降则亡阴,阴愈亡则火愈甚,所以服寒药反热者,是阴虚不宜降。又如阳衰阴盛者,是气弱生寒,治疗的人不知道补阳以消阴,而专用辛温治阴之旺,哪里知道辛热能耗散,耗散则亡阳,阳愈亡则寒愈甚,所以服热药反寒者,是阳虚不宜耗。这没有别的,都是因为专治旺气,所以相反如此。
喻嘉言说:逆秋气则伤肺,冬天发生飧泄,与春伤于风,夏天发生飧泄不同。然而伤风而飧泄,以风为主,风属木;伤肺而飧泄,以肺为主,肺属金,其征候各异。风邪伤人,必入空窍,而空窍以脾胃为最,风既居之,其导引如顺风扬帆,不等脾的运化,食入即出,以致吃完就泄。不知道的人以为是脾虚完谷不化,如长夏洞泄寒中,及冬月飧泄的泄,反而用补脾刚燥的药,助风性之劲,有泄无已,每每至于束手无策。倘若知道从春令治之,用桂枝引领风从肌表而出,一二剂可愈。秋月之伤肺,伤于肺之燥,与秋伤于燥,冬天发生咳嗽同是一病。但在肺则为咳嗽,在大肠则为飧泄,世所谓肺移热于大肠,久为肠澼者,就是这个病。只要使肺热不传于大肠,则飧泄自止。不知道的人只务止涩,以燥益燥,不也很冤吗。
逆冬气则伤肾,春天发生痿厥,是同一病吗?回答说:痿自痿,厥自厥,本是二病。然而痿者必至于厥,厥者必至于痿,究竟还是同一病。但肝气失恃,则痿病先见;筋脉未倾,则厥病先见耳。肝病则筋失所养,如其素来有筋患,不觉忽然而痿矣。肝气以条达为顺,素多郁怒,其气不条达而横格,渐至于下虚上盛,气高不返,眩晕不知人而厥矣,厥必气通始苏也。这些都是冬天失养脏之道,正气不足的病,与治疗痰治风绝不相干。一味培补肾水,生津养血,听其筋自柔和,肝自条达即可。如果精枯气削,也难办了。
药以胜病,乃至于脾胃不胜药,犹不加察,元气亦坏,变症多端。如脾虚而气短,不能以续,变而似喘促,还用降气定喘的药;如脾虚卫气不行,变而为浮肿,还用耗气利水的药;如脾虚郁滞,变而作寒热,还谓之外感,用外散的药。虚而愈虚,直令气尽身亡,全不悔悟,复以此法施之他人,辗转戕生,可胜诛哉。
人的真气所在,其义有三,叫上、中、下。上者所以受于天,以通呼吸;中者生于水谷,以养荣卫;下者气化于精,藏于命门,以为三焦的根本。故上有气海,叫膻中,其治在肺;中有水谷气血之海,叫中气,其治在脾胃;下有气海,叫丹田,其治在肾。人所依赖的,只有此气罢了。气聚则生,气散则死。所以黄帝说气为内宝,这确实是最重的词,医家最切的旨意。现在的医家,只知道见病治病,起初不识人的根本。天下的理,哪有根本受伤,而能不败的呢。
天下假虚的证不多见,而假实的症最多;假寒的症不难治,而假热的治多误。然而实者多热,虚者多寒。如丹溪说:气有余便是火,所以实能受寒。而我接着说:气不足便是寒,所以虚能受热。世上有不明白真假本末而知医的,则不敢许。
喻嘉言说:肾中真阳得水以济之,留恋不脱;得土以堤之,蛰藏不露。而手足之阳为之役使,流走周身,固护腠理,而捍卫于外。脾中之阳,法天之健,消化饮食,传布津液,而营运于内。胸中之阳,若日之驭,离照当空,消阴除翳,而宣布于上。这三者,丰亨有象,肾中真阳安享太平。惟在位、在上、在中之阳,衰微不振,阴气乃始有权。或肤冷不温,渐至肌硬不柔,卫外之阳不用矣;或饮食不化,渐至呕泄痞胀,脾中之阳不用矣;或当膺阻碍,渐至窒塞不开,胸中之阳不用矣。乃取水土所封之阳,出而在事,头面得阳而戴赤,肌肤得阳而燥,脾胃得阳而除中,其能久乎?
庞安常说:有阴水不足,阴火上升,肺受火侮,不得清肃下行,由此津液凝浊生痰不生血者,这应当以润剂加麦冬、地黄、枸杞之类滋其阴,使上逆之火得返其宅而息焉,则痰自清矣。投以二陈汤,立见危殆。有肾虚不能纳气归原,出而不纳,积而不散,则痰生焉,八味丸主之。此证甚难。
心为血之主,肝为血之脏;肺为气之主,肾为气之脏,诚哉是言也。学人惟知血之出于心,而不知血之纳于肝,惟知气之出于肺,而不知气之纳于肾。假如血痢作恙,治以行血逐积等剂,而其痛独存者,血之所藏无以养也,必佐以养肝,则其痛止。如喘嗽气鸣,治以调气豁痰,而终不下降者,以气之所藏无以归也,必佐以安肾,则其气归原。此传心吃紧之法也。
He Baizhai said: The ministerial fire of the lower extremities belongs to the Gallbladder, paired with the Liver, and governs Blood; the ministerial fire of the upper extremities belongs to the Sanjiao (Triple Burner), paired with the Mingmen (Gate of Life) of the Kidney, and governs Essence. Both the Liver and the Mingmen belong to Wind-Wood. Within Wood there is Fire, so there is heat qi within Essence and Blood. However, Essence and Blood are moist in nature and belong to Water. Fire and Water coexist, thus they do not flare up. When they flare up as heat syndromes, it is all due to the depletion of Essence and Blood, like dry wood catching fire easily. Therefore, diseases where ministerial fire flares up are difficult to treat. Currently, diseases such as deficiency consumption and bone-steaming fever are all syndromes of ministerial fire heat. Small urine cannot extinguish great fire; the method should be to tonify Yin, then the heat will recede naturally. This criticizes the error of Danxi's advocacy for cold and cool herbs. The viscera and bowels of humans take the Spleen and Stomach as their root, because human food enters the Stomach and is transported by the Spleen, akin to the earth. However, whether the Spleen and Stomach can digest depends on the two qi of Water and Fire, not merely on the Spleen and Stomach themselves. Excess Fire causes the Spleen and Stomach to be dry; excess Water causes them to be damp; neither can transform substances, leading to various diseases. The syndrome of edema is generally due to excess Water and Fire's inability to transform it. With deficient Fire failing to vaporize Water, water entering the Spleen and Stomach seeps into the blood vessels, muscles, and bones, and Blood transforms into Water, causing swelling. This is a natural principle. To drain the Water and tonify its Fire, bringing the two qi into harmony, the disease will be eliminated. Danxi claimed that Spleen failure in transportation and transformation is due to Liver Wood overacting on Spleen Earth, and thus sought to clear Heart Fire so that Lung Metal could take command to control the Liver source. This is pedantic and impractical.
Liu Hejian stated that tonifying or purging the root of the Spleen and Stomach lies in the neutral qi of the Spleen and Stomach. Drying dampness is purging; moistening dryness is tonifying.
Danxi said that "Qi has no tonification method" is a vulgar opinion. Because of fullness and obstruction, it seems difficult to tonify. One does not know that when Zheng Qi (Upright Qi) is deficient, Zhuo Qi (Turbid Qi) stagnates. When Zheng Qi is tonified, it performs its vigorous transportation function, and Zhuo Qi descends naturally, eliminating fullness. If Qi deficiency is not tonified, how will pathogenic factors retreat? The *Neijing* states: Those who are strong recover when Qi moves; those who are weak develop disease when Qi stagnates. To break stagnant Qi and eliminate distension, one must tonify Spleen Qi. This is the precise and appropriate method, unknown to superficial understanding.
Generally, in cases of bleeding, the pulse is always flooding and forceless, which is the Kou (Hollow) pulse. Since Yin Blood is depleted, Yang has no foundation and floats outward, hence this manifestation. Mistaking this for Excess Fire is a major error.
Zhang Sanxi said: Generally, deficiency consumptions should be divided into two categories: one is Middle Qi deficiency, belonging to internal injury, with a slow or empty-large and forceless pulse, which is treatable; the other is True Yin depletion, with Yin deficiency and Fire hyperactivity, with a wiry-rapid and forceless pulse, which is difficult to treat.
He also said: Damage to the Heart and Lungs leads to deterioration of complexion; damage to the Kidneys and Liver leads to emaciation and flaccidity.
Jaundice has Yin and Yang types: Earth of Heaven Five, burned by Fire, is Yang Jaundice; Fire of Earth Two, drowned by Water, is Yin Jaundice.
In mild deficiency consumption, True Fire still exists, and taking cold/cool herbs is acceptable; in severe deficiency consumption, True Fire is already depleted. How can cold/cool herbs transform into Essence and Blood to tonify the deficiency? Within the human body, there are three Treasures stored: Yuan Jing (Primordial Essence), Yuan Qi (Primordial Qi), and Yuan Shen (Primordial Spirit). Essence is the true substance of the viscera, not comparable to Ying Blood, hence called Tian Gui (Heavenly Puberty). Qi is the great channel of the viscera and the master of movement and stillness, hence called Shen Ji (Spirit Mechanism). The pulse is the great atmospheric qi of Tian Zhen (Natural Truth); its mechanism of movement and rotation follows Qi and is nourished by Blood. Essence and Qi originate and generate each other without loss, nourishing the whole body, serving as the life governor of humans. If Essence is insufficient, Qi loses its resource for transformation; if Qi is insufficient, Blood loses its nourishment; if Blood is insufficient, Qi has no attachment. Tian Zhen scatters, and disease arises.
Zhang Sanxi said: Labor injuries to the five viscera all become Zhai (Consumption/Tuberculosis), but only Lung Zhai is incurable. Due to coughing, hemoptysis, rising Yin Fire, worsening at dusk, and eventually ulcers in the throat, sleeping on one side (left or right), using cold/cool yin-nourishing herbs damages the Spleen and increases diarrhea, while using Ginseng and Atractylodes to tonify Qi aids Fire and increases cough. Adding diarrhea and asthma brings death near. Generally, a fine-rapid pulse, bone-steaming, dry cough with hoarseness are incurable. This is True Yin depletion, disease in the Gao Huang (deep interior), beyond the reach of medicine. For those with tidal fever, laypeople use cooling herbs, not knowing that Yin deficiency generates internal heat, which cannot be treated with Scutellariae Radix (Huangqin), Coptidis Rhizoma (Huanglian), Anemarrhenae Rhizoma (Zhimu), or Phellodendri Cortex (Huangbai). If it is external heat pathogen, heat stops when pathogens clear; if it is food retention fever, heat stops when stagnation resolves. This Yin deficiency is not formed overnight; quiet mind can nourish Yin, but it fully relies on diet generating Yin Blood from the Stomach. If one ignores the Spleen and Stomach and only focuses on Kan-Li (Heart-Kidney interaction), Yin may not be nourished, heat may not be removed, the Spleen and Stomach will be further damaged, and heat-cough will worsen.
Dongyuan said: Hundred diseases worsen during the day and are quiet at night; this is Excess Yang, meaning Qi disease without Blood disease. Worsening at night and quiet during the day is Excess Yin, meaning Blood disease without Qi disease. Fever during the day and quiet at night means Yang is flourishing in the Yang division. Quiet during the day and fever at night means Yang Qi sinks into Yin, named Re Ru Xue Shi (Heat Entering the Blood Chamber). Fever and irritability both day and night mean Double Yang without Yin; one must urgently purge Yang and vigorously tonify Yin. Chills at night and quiet during the day means Yin Blood flourishes in the Yin division. Quiet at night and chills during the day means Yin Qi overflows into Yang. Chills both day and night mean Double Yin without Yang; one must urgently purge Yin and vigorously tonify Yang. Chills during the day, irritability at night, and inability to eat is named Yin-Yang Interlacing, which is fatal.
Dongyuan said: Solid pulses in both Cun positions indicate Yang Excess and Yin Deficiency; purgation leads to recovery. Empty pulses in both Cun positions indicate both Yin and Yang Deficiency; tonifying Yang exhausts Yin, tonifying Yin exhausts Yang; one should harmonize with Sweet Herbs. Insufficient pulses in both Cun positions should be sought in the Earth, which is the Spleen and Stomach; one should draw Yang from Yin. Short/small pulses in both Cun positions indicate Yang Qi insufficiency and disease in the lower part, named Yin Excess and Yang Deficiency; acupoints Xiaguling (Lower Ridge, likely referring to Zusanli ST-36 area contextually or specific point) and Sanli should be selected. Tonification and purgation without form is called guiding Qi and securing Essence; treatment methods are taken from the "Five Chaos" category. This is a deficiency disease; one should select acupoints on the abdomen, Qihai (CV-6). In severe cases, select Zusanli (ST-36) and Qichong (ST-30), guiding with filiform needles. Solid pulses in both Guan positions, not reaching the extent of sweating or purging stool, should be treated with Shaoyao Tang (Peony Decoction) to purge Earth Excess. Empty pulses in both Guan positions with deep-fine pulses should be treated with Lizhong Tang (Regulate the Middle Decoction). Wiry-slow pulses should be treated with Jianzhong Tang (Establish the Middle Decoction), possibly adding Astragali Radix (Huangqi) and Aconiti Lateralis Radix Praeparata (Fuzi). Solid pulses in both Chi positions indicate Yin Excess and Yang Deficiency; purgation leads to recovery. Empty pulses in both Chi positions should be treated with Jiangfu Tang (Ginger and Aconite Decoction) to tonify Yang. Question: Why tonify Yang for Yin Deficiency? Answer: Yin originates from Yang. Zhang Zhongjing said: For empty pulses in both Chi positions, purgation is contraindicated; purgation is contrary and leads to death. If pulses in both Chi positions are absent or short/small, the disease is in the Upper (Heaven); seek it in the Back-Shu points of the five viscera. Or if there is latent fire in blood collaterals and meridians, this is Yin Fire in Heaven, causing Yang not to store. Also, the *Nanjing* states: No pulse in the lower part, or exhaustion of both Chi pulses, indicates food blockage; vomiting is indicated.
Ancient sages said: Among Floating, Deep, Slow, Rapid, Slippery, and Rough pulses, there are crucial distinctions that differ greatly, which people often fail to recognize. Floating indicates Exterior, but in all Yin deficiency cases, the pulse is floating and forceless; thus, Floating cannot be generally termed Exterior, nor can dispersing methods be used indiscriminately? Deep indicates Interior, but in severe initial exterior pathogen attacks, if Cold constrains the skin and hair, preventing Yang from reaching the exterior, the pulse first appears Deep-Tight; thus, Deep cannot be generally termed Interior, nor can interior-purging methods be used? Slow indicates Cold, but after early-stage Shanghan recedes, residual heat remains, and the pulse is often Slow-Slippery; thus, Slow cannot be generally termed Cold, nor can warming middle methods be used? Rapid indicates Heat. But in deficiency consumption syndromes where Yin and Yang are both depleted and Qi and Blood are scattered, the pulse is necessarily Urgent-Rapid; the more rapid, the more deficient; the more deficient, the more rapid; thus, Rapid cannot be generally termed Heat, nor can cold/cool methods be used? Fine and Thin resemble Deficiency, but in extreme pain with obstruction, the pulse is often Hidden; thus, Hidden cannot be generally termed Deficiency, nor can sudden tonification be used? Flooding and Wiry resemble Excess, but in cases of severe True Yin depletion, the pulse is often restricted/reversed and double the normal rate; thus, Wiry cannot be generally termed Excess, nor can draining/purging methods be used? In this way, within the general principles, there are overarching principles. If doctors do not combine the Four Diagnostic Methods and act rashly, this is why pulse diagnosis is difficult to explain.
Wang Haogu said: When the pulse is not diseased, its Shen (Spirit) speaks for itself. When the pulse is diseased, one must seek whether the Shen within it exists or not. For example, Six Rapid or Seven Extreme pulses indicate Heat; if there is strength in the pulse, there is Shen. Three Slow or Two Debilitated pulses indicate Cold; if there is strength in the pulse, there is Shen. Heat with Shen: purge the heat, and Shen remains. Cold with Shen: remove the cold, and Shen remains. For Cold Jue pulses, if there is no strength and no Shen, what medicine can be used to drain heat and remove cold? Without knowing this, what basis is there for survival?
Kongtongzi said: Eight or nine out of ten cases of human disease involve Phlegm-Fire. The elderly should not rapidly descend Fire; the deficient should not completely eliminate Phlegm. Over-aggressive attack makes the disease worse and leads to danger; one should essentially consolidate Yuan Qi. Apply this logic to all diseases.
The *Guoxiao* has a method of treating Excess and Deficiency separately, stating that diseases arise from four factors: External contraction, Internal injury generating Fire, generating Dampness, generating Heat, and generating Phlegm. Examine if it is a young/new disease: if Dampness, dry it; if Fire, purge it; if Dampness generates Heat, dry Dampness and clear Heat; if Fire generates Phlegm, purge Fire and resolve Phlegm, leaving nothing unresolved. For the elderly with chronic illness, attack and tonify simultaneously: if Qi deficiency with Damp-Heat-Phlegm-Fire, use Sijunzi Tang (Four Gentlemen Decoction) to tonify Qi, while drying Dampness, clearing Heat, purging Fire, and resolving Phlegm; if Blood deficiency with Phlegm-Fire-Damp-Heat, use Siwu Tang (Four Substances Decoction) to tonify Blood, while draining Fire, resolving Phlegm, clearing Heat, and drying Dampness. Thus, attack and tonification are appropriate. Hence: For young/new diseases, attacking pathogens can be decisive; for elderly/chronic diseases, tonification comes first. As for Yin deficiency with Fire moving, and Spleen-Stomach deficiency: True Yin is Water, Spleen-Stomach is Earth. Earth likes Dryness, but too dry kills vegetation; Water likes Moisture, but too wet rots vegetation. Therefore, formulas tonifying Spleen and nourishing Kidney depend on appropriate dryness and moisture.
Treating "Prosperous Qi": Diseases have Yin and Yang; Qi has Decline and Prosperity. Not understanding decline/prosperity leads to worsened treatment. For Yang Excess and Yin Deficiency (Yin deficiency with Fire hyperactivity), if the practitioner does not tonify Yin but uses bitter-cold herbs to treat the prosperity, they do not know that bitter-cold herbs sink and descend. Sinking and descending destroys Yin; the more Yin is destroyed, the stronger the Fire. Hence, taking cold herbs results in more heat; Yin deficiency should not be descended. Similarly, for Yang Decline and Yin Excess (Qi weakness generating Cold), if the practitioner does not tonify Yang to dissipate Yin but uses pungent-warm herbs to treat Yin prosperity, they do not know that pungent-hot herbs scatter. Scattering destroys Yang; the more Yang is destroyed, the colder it becomes. Hence, taking hot herbs results in more cold; Yang deficiency should not be scattered. There is no other reason; this happens because one treats only the prosperous Qi, leading to opposition.
Yu Jiayan said: Violating Autumn Qi injures the Lung, causing Sundry Diarrhea (Sun Xie) in Winter. This differs from Spring Wind injury causing Summer Sundry Diarrhea. In wind-induced Sundry Diarrhea, Wind is primary (Wood); in Lung-injury induced Sundry Diarrhea, Lung is primary (Metal). Their signs differ. Wind pathogens enter hollow orifices, most notably the Spleen and Stomach. Once Wind resides there, its guidance is like sailing with the wind; it does not wait for Spleen transportation and transformation. Food enters and exits immediately, causing immediate defecation after eating. Unknowing people think it is Spleen deficiency with undigested food, similar to Long Summer洞泄 (cavity diarrhea) or Cold Center, and winter Sundry Diarrhea. They wrongly use rigid-drying Spleen-tonifying herbs, aiding the vigor of Wind, leading to endless diarrhea and helplessness. If one knew to treat according to Spring dynamics, using Guizhi Tang (Cinnamon Twig Decoction) to lead Wind out from the muscle layer, it could be cured in one or two doses. Autumn Lung injury is caused by Lung Dryness, same as Autumn Dryness injury causing Winter Cough. In the Lung it is Cough; in the Large Intestine it is Sundry Diarrhea. What the world calls "Lung transferring Heat to Large Intestine, becoming Chang Pi (Intestinal Dysentery/Feces with Blood) over time" is this disease. If Lung Heat does not transmit to the Large Intestine, Sundry Diarrhea stops naturally. Unknowing people only strive for astringency, adding Dryness to Dryness, is this not unjust?
Violating Winter Qi injures the Kidney, causing Wei Jue (Flaccidity and Cold Extremities) in Spring. Is it the same disease? Answer: Wei is Wei, Jue is Jue; originally two diseases. However, Wei inevitably leads to Jue, and Jue inevitably leads to Wei; ultimately, it is the same disease. But if Liver Qi loses support, Wei disease appears first; if sinews and vessels do not collapse, Jue disease appears first. Liver disease causes sinews to lose nourishment; if one has prior sinew issues, sudden Wei occurs. Liver Qi prefers free flow; chronic anger/stagnation causes Qi to flow irregularly and horizontally, gradually leading to Lower Deficiency and Upper Excess, Qi rising high and not returning, dizziness, unconsciousness, and Jue. Jue requires Qi connection to recover. These are diseases of failing to nourish viscera in Winter and insufficient Zheng Qi, unrelated to treating Phlegm or Wind. Solely tonifying Kidney Water, generating fluids, and nourishing Blood allows sinews to soften and Liver Qi to flow freely. If Essence is exhausted and Qi is diminished, it is difficult to manage.
Medicine conquers disease, but if the Spleen and Stomach cannot withstand the medicine, and one fails to observe, Yuan Qi is ruined, and many variable symptoms appear. For example, Spleen deficiency with shortness of breath, unable to continue, transforming into apparent panting; yet using Qi-descending and pantling-stopping herbs is applied. Spleen deficiency with Wei Qi not circulating, transforming into edema; yet using Qi-consuming and diuretic herbs is applied. Spleen deficiency with stagnation, transforming into alternating chills and fever; yet treating as external contraction with exterior-dispersing herbs is applied. Deficiency becomes more deficient, directly leading to Qi exhaustion and death, without repentance, and applying this method to others, perpetuating harm, how can this be pardoned?
The location of Human True Qi has three meanings: Upper, Middle, and Lower. The Upper receives from Heaven and facilitates respiration; the Middle is born from water and grain and nourishes Ying and Wei; the Lower is transformed from Essence, stored in the Mingmen, and serves as the root of the Sanjiao. Thus, there is an Upper Qi Sea, called Shanzhong (CV-17), governed by the Lung; there is a Middle Sea of Water, Grain, Qi, and Blood, called Zhong Qi, governed by the Spleen and Stomach; there is a Lower Qi Sea, called Dantian, governed by the Kidney. Humans rely only on this Qi. Qi gathers, and life exists; Qi scatters, and death occurs. Thus, the Yellow Emperor said Qi is the inner treasure. This is indeed the most important term and the most urgent principle for physicians. Current physicians only see disease and treat disease, initially failing to understand the human root. In the world, how can there be success if the root is injured?
False Deficiency syndromes are rare, but False Excess syndromes are common; False Cold syndromes are not hard to treat, but False Heat syndromes are often mismanaged. Generally, Excess involves Heat, and Deficiency involves Cold. Danxi said: "Excess Qi is Fire," so Excess can tolerate Cold. I add: "Deficient Qi is Cold," so Deficiency can tolerate Heat. Those in the world who do not understand the truth and falsehood of origins and branches cannot be considered knowledgeable physicians.
Yu Jiayan said: True Yang in the Kidney is aided by Water, lingering and not escaping; dammed by Earth, hibernating and not revealing. Hand and Foot Yang serve it, flowing through the body, securing the Cou Li (pores/skin-muscle spaces), and defending externally. Yang in the Spleen follows Heaven's vigor, digesting food, distributing fluids, and operating internally. Yang in the Chest is like the sun driving the chariot, shining brightly, dissipating Yin and removing obscurity, announcing upwards. These three are abundant and peaceful, allowing True Yang in the Kidney to enjoy peace. Only when Yang in position, above, and in the middle declines and fails, does Yin Qi gain power. Skin cold and not warm, gradually becoming hard and inflexible, Wei Yang fails; indigestion, gradually vomiting, diarrhea, fullness, Spleen Yang fails; chest obstruction, gradually blocking open, Chest Yang fails. Then taking Yang sealed in Water and Earth to emerge and act: Head and face get Yang and turn red; skin gets Yang and becomes dry; Spleen and Stomach get Yang and suffer Chu Zhong (Elimination of Middle); how long can this last?
Pang Anchang said: There is Yin Water insufficiency, Yin Fire rising, Lung suffering Fire insult, unable to descend clearly and purely. Consequently, fluids condense turbidly to generate Phlegm instead of Blood. This should be treated with moistening agents plus Ophiopogonis Radix (Maidong), Rehmanniae Radix (Dihuang), and Lycii Fructus (Gouqi) to nourish Yin, allowing the rising Fire to return to its home and rest, then Phlegm clears naturally. Administering Erchen Tang leads to immediate danger. There is Kidney deficiency failing to grasp Qi and return it to the origin; Qi goes out but does not gather, accumulates but does not disperse, generating Phlegm. Bawei Wan (Eight-Ingredient Pill) is indicated. This syndrome is very difficult.
The Heart is the master of Blood, the Liver is the residence of Blood; the Lung is the master of Qi, the Kidney is the residence of Qi. Truly these words! Students only know Blood originates from the Heart, not knowing Blood is stored in the Liver; only know Qi originates from the Lung, not knowing Qi is stored in the Kidney. For example, Bloody Dysentery caused by illness, treated with Blood-moving and accumulation-expelling formulas, but pain persists because the storage of Blood lacks nourishment; one must assist with Liver-nourishing herbs, then pain stops. For panting, coughing, and wheezing, treated with Qi-regulating and Phlegm-resolving formulas, but Qi never descends because the storage of Qi lacks a place to return; one must assist with Kidney-calming herbs, then Qi returns to its origin. This is the crucial method of transmitting the heart-mind.