禪林寶訓 1.13

1.13

圓通謂大覺曰。古聖治心於未萌。防情於未亂。蓋預備則無患。所以重門擊柝以待暴客。而取諸豫也。事豫為之則易。卒為之固難。古之賢哲。有終身之憂。而無一朝之患者。誠在於斯（九峯集）。

Yuantong said to Dajue: “The ancient sages governed the mind before it sprouted and guarded against passions before they fell into disorder. For if there is preparation, there will be no calamity. That is why they ‘doubled the gates and sounded the watchman's clapper to guard against violent intruders,’ drawing this from [the hexagram] Yu (Enthusiasm / Preparation). If a matter is prepared beforehand, it is easy; if done hastily, it is truly difficult. That the worthy philosophers of old had lifelong concerns but never a single morning’s calamity—truly it lies in this!” (*Collection of Jiufeng*)