有喜怒哀乐之情却没有发作，这是从凡人之心直接追溯到道德之心，使人们存心修养；虽未发生但却有喜怒哀乐的表现，这是由道心指出人心的缺欠，要人们反省改正。

The Ethernet was designed to be simple, inexpensive, and capable of handling a wide range of applications.

I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

The core of large-scale farming is standardization, and the prerequisite for standardization is scientization.