239．不要打破沙锅问到底

不要打破沙锅问到底。做人更重要的是明白事理。所知超出所需，就会弄钝你的武器，因为锋利的刀刃容易卷口或者豁口。了解常识性的事实最为妥当。了解事情没有错，但不要揪住细枝末节不放。评论太多就会引起争议。明白事理要好得多，这样就不会偏离正在做的事情。

239．Do not be captious

Do not be captious. It is much more important to be sensible. To know more than is necessary blunts your weapons, for fine points generally bend or break. Commonsense truth is the surest. It is well to know but not to niggle. Lengthy comment leads to disputes. It is much better to have sound sense, which does not wander from the matter in hand.