因果方法在于理解生成数据的机制。
The causal approach is about understanding the mechanisms that generate the data.
语言是一种自由创造的过程；其法则和原则是固定的，但生成原则的使用方式是自由且无限多样的。
"Writing is a way of speaking without being interrupted."
Civilization as it is known today could not have evolved, nor can it survive, without an adequate food supply.
好名声不能轻而易举地得到，荣誉也不能以巧诈树立，君子用身心戴道而行。以身戴行，是一个成语，意为言行合一，用身心戴道而行。
品质始于土壤。健康的土地才能长出健康的水果。