The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.
世界所有前进的动力都归功于不安分的人。快乐的人不可避免地把自己限制在古老的界限内。
The most important single aspect of software development is to be clear about what you are trying to build.
过去了的再也不能挽救，未来的还是可能补回。