希望不是一种感觉，而是一件可实践的事。
Hope is not a feeling; it is a doable thing.
I still haven't found what I'm looking for.
The concept of computational efficiency is central to the design of learning algorithms.
一旦社会接受了财产不像上帝的法律那样神圣，并且没有法律和公共正义的力量来保护它的观念，无政府状态和暴政就会开始。