出自汉·桓宽《盐铁论·疾贪》。欲，想。表，仪表，这句话指身体。下，指下属。先之身，先要求自己。要想影子正，就要先把自己的身子站直；要想下属清廉，自己要先做出表率。这句话以正影先正身为喻，说明正人先正己的道理。

In the world of computing, the boundary between the possible and the impossible is often defined by the algorithms we can devise.

For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.

The chemical industry must lead the charge in sustainability, or we will all pay the price.

The greatest threat to democracy is not from external enemies but from internal decay and the loss of civic virtue.