Rule Thirteen - If we perfectly understand a problem we must abstract it from every superfluous conception, reduce it to its simplest terms and, by means of an enumeration, divide it up into the smallest possible parts.

• 如果我们完全地理解了一个问题，我们应该将之从任何肤浅的概念抽离出来，将此问题化约成它最单纯的词项，而且，在细数、罗列之中，尽可能地将它分成最小的部份。