五行总论
穷通宝鉴 · section 1 · 余春台 輯（原本《欄江網》） · 413 characters
Original text
五行者，本乎天地之间而不穷者也，故谓之行。 北方阴极而生寒，寒生水。南方阳极而生热，热生火。东方阳散以泄而生风，风生木。西方阴止以收而生燥，燥生金。中央阴阳交而生温，温生土。其相生也所以相维，其相克也所以相制，此之谓有伦。 火为太阳，性炎上。水为太阴，性润下。木为少阳，性腾上而无所止。金为少阴，性沉下而有所止。土无常性，视四时所乘，欲使相济得所，勿令太过弗及。 夫五行之性，各致其用。水者其性智，火者其性礼，木其性仁，金其性义，惟土主信，重宽厚博，无所不容：以之水，即水附之而行；以之木，则木托之而生；金不得土，则无自出；火不得土，则无自归。必损实以为通，致虚以为明，故五行皆赖土也。 推其形色，则水黑、火赤、木青、土黄，此正色也。及其变易，则不然。常以生旺从正色，死绝从母色，成形冠带从妻色，病败从鬼色，旺墓从子色。 其数则水一、火二、木三、金四、土五。 生旺加倍，死绝减半。 以义推之，夫万物负阴而抱阳，冲气以和。过与不及，皆为乖道。故高者抑之使平，下者举之使崇，或益其不及，或损其太过。所以贵在折衷，归於中道，使无有余不足之累，即才官印食贵人驿马之微意也。行运亦如之，识其微意，则於命理之说，思过半矣。
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